You work for a firm on Wall Street that specializes in mergers, and you are the team leader in charge of getting approval for a merger between two major beer manufacturers in the United States. While the text indicates that the four-firm ratio concentration ratio for the 494 breweries operating in the United States is 91 percent, your team has put together a report suggesting that the merger does not present antitrust concerns even though the two firms each enjoy a 15 percent share of the U.S. market.