Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:
(A) Quantity A is greater.
(B) Quantity B is greater.
(C) The two quantities are equal.
(D) The relationship cannot be determined from the information given.
A symbol that appears more than once in a question has the same meaning throughout the question.
A cone has height $h$ and radius $r$.
Quantity A: The change in the original volume if the height is doubled.
Quantity B: The change in the original volume if the radius is doubled.