Which of the Following Describes a Situation in Which Demand

Which of the following describes a situation in which demand must be elastic?

A) Total revenue increases by 15 percent when the price of corndogs rises by 15 percent.
B) Total revenue increases by less than 15 percent when the price of corndogs rises by 15 percent.
C) Total revenue decreases by more than 15 percent when the price of corndogs rises by 15 percent.
D) Total revenue increases by $15 when the price of corndogs rises by $15.
E) Total revenue increases by more than $15 when the price of corndogs rises by $15.