Select the set in which the numbers are related in the same way as are the numbers of the following set.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

(21, 225, 9)
(12, 49, 2)

A

(14, 64, 2)

B

(11, 18, 7)

C

(15, 54, 3)

D

(13, 81, 6)