What is the smallest integer k for which 64^k > 4^17?
Choose the correct choice from the following answers:
A) 4 B) 5 C) 6 D) 7 E) 8

Rationale: "64 ^ k > 4 ^ 17 4 ^ ( 3 k ) > 4 ^ 17 3 k > 17 k = 6 the answer is c ."
Answer: C