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?  Select:
A) $ 60	B) $ 52	C) $ 63	D) $ 64	E) $ 68

Rationale: formula for vol of a cyl is pi * r ^ 2 * h so vy = 64 * vy y when half filled will cost 32 times x so ans is d
Answer: D