Assets which include foreign currencies and gold certificates that central banks use to maintain exchange rates in a predetermined range are called:

In the long run when a perfectly competitive firm experiences negative economic profits

A) the high barriers to entry prevent further competition. B) existing firms exit the industry. C) additional firms enter the industry. D) firms have no incentive to exit or enter the industry.

Cross-subsidization implies that a loss from one product's sales will be made up by the profit from another product's sales

a. True b. False Indicate whether the statement is true or false