Suppose the price elasticity of demand for your economics textbook is -1. If the publishers lowers the price 5 percent, this will result in:

	A.	A 5 percent rise in quantity demanded, and a 5 percent rise in total revenue.
	B.	A 5 percent rise in quantity demanded, and no change in total revenue.
	C.	A 50 percent rise in quantity demanded, and a 20 percent rise in total revenue.
	D.	A 5 percent rise in quantity demanded, and a 20 percent rise in total revenue.
	E.	A 50 percent rise in quantity demanded (the effect on total revenue is uncertain).