This bar chart displays the distribution of categorical grades, from "sehr gut" to "ungenügend," with bars colored in a dark blue and value labels above each bar. It uses React to render an SVG element and relies on D3 v5 APIs including `scaleBand`, `scaleLinear`, `axisBottom`, and `axisLeft`. Hovering over a bar triggers a tooltip that shows the category and its numeric value, while axis labels and a title are generated dynamically. The chart uses a margin-based layout with rotated x-axis tick labels for readability.