This pie chart visualizes COVID-19 deaths by brand, with each slice’s size proportional to the YTD value and a legend listing each category with its count in thousands. The chart is rendered as an SVG using D3 v5, loading CSV data via `d3.csv` from a GitHub gist. It uses `d3.pie` to compute arc angles, `d3.arc` to generate SVG paths, and `d3.scaleOrdinal` for categorical colors, while axis labels are formatted with `d3.format`.