The price elasticity of demand for a textbook is estimated to be 1 no matter what the price or quantity demanded. In this case:
A) a 10 percent increase in price will result in a 10 percent decrease in the quantity demanded.
B) an increase in price will decrease the total revenue of sellers.
C) a decrease in price will increase the total revenue of sellers
D) a 10 percent increase in price will result in a 10 percent increase in the quantity demanded.