If 2^2n + 2^2n + 2^2n + 2^2n = 4^22, then n =  Choose the correct choice from the following options:
A) 3 B) 6 C) 12 D) 23 E) 21

Rationale: 2 ^ 2 n + 2 ^ 2 n + 2 ^ 2 n + 2 ^ 2 n = 4 ^ 22 = > 4 x 2 ^ 2 n = 4 ^ 22 = 2 ^ 44 = > 2 ^ 2 x 2 ^ 2 n = 2 ^ 44 = > 2 ^ ( 2 n + 2 ) = 2 ^ 44 = > 2 n + 2 = 44 = > n = 21 so . answer will be e .
Answer: E