Christina has chosen a set of vases for her wedding registry. The vases are cylindrical and their dimensions (in inches) are as follows.

• Vase A: h = 12 and r = 3
• Vase B: h = 6 and r = 6

Which of the following statements about the volumes of the vases is true?

1. The volume of vase B is half the volume of vase A.

2. The volume of vase A is half the volume of vase B.

3. The volume of vase B is four times the volume of vase A.

4. The volumes of the two vases are equal.