If 625(5^x) = 1 then x=	Choose one:
A) – 2  B) - 4  C) 0  D) - 1  E) 2

Rationale: "5 ^ x = 1 / 625 5 ^ x = 1 / 5 ^ 4 5 ^ x = 5 ^ - 4 x = - 4 b"
Answer: B