If a firm's marginal product of labor is less than its average product of labor, then an increase in the quantity of labor it employs definitely will

The price of oranges rises. What happens in the market for apples, which are a substitute for oranges?

A) The equilibrium price falls, and the equilibrium quantity rises. B) The equilibrium price rises, and the equilibrium quantity falls. C) The equilibrium price and quantity rise. D) The equilibrium price and quantity fall.

If the Fed were to impose a slight increase in the required reserves ratio, there would be _____.

(A) No change in the money supply. (B) An increase, then a decrease, in the money supply. (C) An increase in the money supply. (D) A decrease in the money supply.