The correct option is A Infinite
As we know, there are infinite integers, hence there can be infinite multiples of a number when multiplied with each integer.
For example:
Multiples of 5 are
5 × 1 = 5
5 × 2 = 10
5 × 3 = 15
..
5 × 100 = 500
..
5 × 10000 = 50000
and so on...