For a nonlinear demand function of the form, Q = aPbMc, the estimated cross-price elasticity of demand is 

If a firm is experiencing constant returns to scale

a. long-run average total cost neither rises nor falls as production increases b. average fixed cost is zero c. the increase in average variable cost is exactly offset by a decrease in average fixed cost d. the decrease in average variable cost is exactly offset by an increase in average fixed cost e. long-run average total cost is zero.

Price-fixing agreements among competing firms are a violation of the Sherman Antitrust Act

a. True b. False