Nationwide Bank has approached Hometown Bank with a proposal to merge. The following table lists the sales of the banks in the area. Bank Name Urban Bank Sales (in millions of US dollars) 540 Mega Bank 1,500 Hometown Bank 660 Bulk Bank 1,265 Nationwide Bank 1,245 Metropolitan Bank 880 City Bank 1,350 American Bank Atlantic Savings 710 1,185 1. Based on the information on the table above, calculate the four-firm concentration ratio and the Herfindahl-Hirschman index in the current market. 2. Based on the FTC and DOJ Horizontal Merger Guidelines described in the text, do you think the Justice Department is likely to challenge the proposed merger? Explain your