Cylinders P and Q are both constructed from copper. The height of P is twice that of Q, and the diameter of P is half that of Q. Which statement is correct?
- AThe density of cylinder P is four times that of cylinder Q.
- BThe density of cylinder P is twice that of cylinder Q.
- CThe density of cylinder P is equal to that of cylinder Q.
- DThe density of cylinder P is half that of cylinder Q.