Two cylinders P and Q are made from copper. The height of P is double the height of Q. 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.