This interactive bar chart visualizes donor types, comparing the total number of donations with those attributed to Covid and other causes. Three text labels at the bottom of the chart act as a menu, allowing the user to switch the quantitative axis between these three categories. The visualization is built with React and D3 v6, using `d3.scaleBand` for the categorical axis, `d3.scaleLinear` for the quantitative axis, and SVG rectangles. The data is loaded from a CSV file and formatted with `d3.format`.