The Book Nook Reduces Prices by 20 Percent

Multiple Choice

The Book Nook reduces prices by 20 percent. If the dollar value of The Book Nook's sales remains constant, it indicates that:

A) the quantity of books sold remains constant.
B) the demand for the books is perfectly elastic.
C) the demand for the books is inelastic.
D) the quantity of books sold increases by 20 percent.
E) the quantity of books sold decreases by 20 percent.