If (5)(x^2) has three different prime factors, at most how many different prime factors does x have?	Choose the correct choice: A) 1 B) 2 C) 3 D) 4 E) 5
x can have at most 3 prime factors, namely the prime factor 5 plus two others.   If x had more than this number of prime factors, then (5)(x^2) would have more than 3 prime factors.   The answer is 3.
<result>C</result>
If (5)(x^2) has three different prime factors, at most how many different prime factors does x have?