If a is a positive integer, which of the following could NOT be the square of a?  Choose the correct choice
A) 2432	B) 7426	C) 5966	D) 3415	E) 2155
A number ending in 2 cannot be a perfect square.   2432 ends in a number 2, making that the correct answer   (2432) 2432
<result>A</result>
If a is a positive integer, which of the following could NOT be the square of a?