Vote for A from myside too
From A, we can get the prime numbers as 2,3 & 5 and their product is 30. So X is 30. A--> Sufficient.
From B, we get 2 numbers, 15 & 30.. Insufficient.
"The difference between a smart person and a wise person is that
a smart person knows what to say and
a wise person knows whether or not to say it."