Analogy - Verbal and Reasoning

Directions to SolveIn each of the following questions find out the alternative which will replace the question mark.
Q1:

9 : 8 :: 16 : ?

A 27

B 17

C 16

D 18

ANS:A - 27

Explanation: 9 = (3)2 8 = (3 - 1)3 and 16 = (4)2 ? = (4 - 1)3 = 27