11. Use the following table to calculate the four-firm concentration ratio for the U.S. auto market. Show your work! Does this indicate a concentrated market or not? Explain. GM 19% Ford 17% Toyota 14% Chrysler 11% 12. Use the previous and following table to calculate the Herfindal-Hirschman Index for the U.S. auto market. Show your work! Would the FTC approve a merger between GM and Ford? Explain. Honda 10% Nissan 7% Hyundai 5% Kia 4% Subaru 3% Volkswagen 3%