Market Share Firms (percent) 32 17 15 10 iIN-ib-UINI'J The above table shows the market share of 10 firms in an industry before a recession. Answer the following questions and show mathematical work to receive points. 1. (2 points) Calculate the Four-Firm concentration ratio for this market from the above table? What kind of market structure is indicated by the four-firm ratio, and why? 2. (2 points) Due to a global recession, all the firms were closing businesses, except A, C, D, and E. With only these four firms operating, Firm A's market share is 40%, Firm C's market share is 28%, Firm D's market share is 20%, and Firm E's market share is 12%. Calculate the new Four-Firm concentration ratio and the Herfindahl-Hirschman Index after the recession. 3. (2 points) Based on #2 information, if Firm Awanted to buy up Frim E, according to the Federal Trade Commission (FTC) guidelines, would the FTC challenge the merger, why