if there are no fixed costs and marginal cost is constant at $56, the price elasticity of demand at the profit-maximizing level of output is closest to

A) 0.28.
B) 7.09.
C) 3.55.
D) 14.18.
E) 0.14.

Consumer packaged-goods companies, such as Procter & Gamble, Pepsi, and Kraft, typically seek an exclusive distribution strategy.