Four Grocery Stores Account for 80 Percent of the Retail

Multiple Choice

Four grocery stores account for 80 percent of the retail food sales in Metro City. Two of the stores want to merge. In determining whether the merger violates the Clayton Act, the most crucial factor is

A) the market shares of the firms in their market.
B) the market value of the firms' shares in the stock market.
C) the comparative value of each store in a market for their sale.
D) the total value of the market in relation to the stock for sale in the stores.