Q: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Problem: oil cans x and y are right circular cylinders and the height and radius of y are each 4 times those of x. if the oil in can x filled to capacity sells for $ 2, how much does the oil in y sell for if y is only half filled ?
Options: a. $ 60, b. $ 52, c. $ 63, d. $ 64, e. $ 68
A:
d