Prime factor problem

[msbinu]

HI

Can anyone help me in solving the below problem
What is the smallest positive integer k such that the product 1575 * k is a perfect square? (A) 7(B) 9(C) 15(D) 25(E) 63

Thanks a lot in advance

[hi4apoorva]

1575=(5*5*9*7)
You need one more 7

Ans :7

[Ben Ku]

Please cite the source (author) of this problem. We cannot reply unless a source is cited (and, if no source is cited, we will have to delete the post!). Thanks.