If a and b are both odd prime numbers and a < b, then how many different positive integer factors does 2ab have?	Choose one
A) 3	B) 4	C) 6	D) 8	E) 12

Rationale: a and b are both odd prime numbers - it means either a or b is not 2 and since prime numbers have only two factors - 1 and the number itself a and b each will have ( 1 + 1 ) = 2 factors hence 2 ab will have ( 1 + 1 ) ( 1 + 1 ) ( 1 + 1 ) = 8 factors d is the answer
Answer: D