How many distinct prime numbers are factors of 33150?  Options:
A) Four	B) Five	C) Six	D) Seven	E) Eight
Start with the prime factorization:   33150 = 50*663 = (2*5*5)*3*221 = (2)*(3)*(5^2)*(13)*(17)   There are five distinct prime factors, {2, 3, 5, 13, and 17}   Answer: Five.
<result>B</result>
How many distinct prime numbers are factors of 33150?