I got so confused about this question. please take a look and figure out for me. thanks

U.S. beer market leading domestic beer brands 2017,based on sales Sales of the leading domestic beer brands of the United States in 2017 (in million U.S. dollars) Sales in million U.S.dollars 2,031 ,064.6 899.2 Bud Light Coors Light Miller Lite Budweiser Michelob Ultra Light Natural Light Busch Light Miller High Life Busch Keystone Light Blue Moon Belgian White Ale Claire A. Simmers Bud Light Lime Pabst Blue Ribbon Coors Natural Ice Bud Light Platinum Lager Samuel Adams Seasonal Sierra Nevada Pale Ale Leinenkugels Shandy Seasonal 631.7 336.2 321.9 95.9 94.8 160.2 164.2 149.7 19.2 128.2 24.6 97.5 84 80.8 76 70.2 Consider the attached beer sales data. Calculate metrics for market share and industry concentration (HHI). Provide a brief narrative that explains your calculated results. Comment also about the share of named light beers relative to other beers