Databases and Visualization Peer Graded Bubble Chart Infographic

Data visualization infographic titled "Small Multiples" using a BUBBLE CHART as the dominant visual element, designed as a small-multiples layout of 4 coordinated 3D scatter-style bubble panels that clearly show contrast across groups. Each panel should share the same honest scale, no truncated axes, no misleading size scaling, with sharp axis labels and tick marks in English. Main panel labels to render exactly: "Panel A", "Panel B", "Panel C", "Panel D". X-axis label in every panel: "Complexity". Y-axis label in every panel: "Clarity". Depth cue / bubble size legend label: "Volume". Subtitle text: "Illustrative comparison across four contrasting groups". Use realistic plausible illustrative numbers only, since no sourced data was provided: for example panel clusters centered around A (22, 68, size 14), (35, 74, size 18), (41, 71, size 20); B (48, 52, size 26), (57, 49, size 30), (63, 46, size 34); C (28, 34, size 12), (39, 29, size 16), (51, 24, size 22); D (66, 81, size 28), (74, 86, size 32), (82, 89, size 36). Include a clean legend with exact labels: "Higher contrast", "Lower contrast", "Bubble size = Volume". Add 4 key insight callouts with small icons, each containing a headline number and short interpretation in English: "82" + "Highest complexity appears in Panel D" with upward arrow icon; "89" + "Top clarity also clusters in Panel D" with star icon; "34" + "Lowest clarity sits in Panel C, showing the sharpest drop" with warning triangle icon; "36" + "Largest volume bubble reinforces the outlier effect" with circle-highlight icon. Add a compact source strip at the bottom with exact text: "Data note: Illustrative example only. Figures are not sourced and are shown for visual demonstration." Visual style: retro 1970s magazine charts, editorial blue & cream palette with muted navy, faded cobalt, warm cream, desaturated teal accents, subtle paper grain, vintage print texture, confident editorial mood, geometric typography, thin rule lines, tidy annotations. Emphasize contrast between panels through spacing, bubble color intensity, and composition while keeping a vector-clean infographic layout. Include editorial data journalism illustration, FT / Bloomberg-grade chart aesthetics, vector-clean infographic layout. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no fake authoritative sources cited, no watermarks Numbers labeled "illustrative" unless the user supplied specific sourced data. No fake authoritative sources cited (do not invent "Source: Reuters 2025" — use "Illustrative example" instead). No misleading axis truncation or scale manipulation.