The Correct answer is C.

Explanation

The intersection of sets??and??is the set of integers that are in??and also in?. Set?consists of all positive integers that are multiples of?, and set??consists of all positive integers that are multiples of?, so the intersection of??and??is the set of positive integers that are multiples of both??and?. This is the set of all positive integers that are multiples of?.?There are an infinite number of positive integers that are multiples of?, so there are more than thirteen integers in the intersection of??and?.