9 : 8 :: 16 : ?

Question: 9 : 8 :: 16 : ?
[A].

27

[B].

17

[C].

16

[D].

18

Answer: Option A

Explanation:

9 = (3)2

8 = (3 – 1)3

and 16 = (4)2

? = (4 – 1)3 = 27