If y is the smallest positive integer such that 4410 multiplied by y is the square of an integer, then y must be Choose the correct answer
A) 2	B) 5	C) 6	D) 7	E) 10

Rationale: 4410 = 2 * 3 ^ 2 * 5 * 7 ^ 2 to be perfect square , we need to multiply by at least 2 * 5 = 10 . the answer is e .
Answer: E