If 3^20 x 2^20 =6^n what is the value of n? Choose the correct answer:  A) 18  B) 20  C) 22  D) 24  E) 26

Rationale: "3 ^ 20 * 2 ^ 20 = 6 ^ n 6 ^ 20 = 6 ^ n therefore n = 20 b"
Answer: B