Asha makes a conjecture that the perimeter of a square whose sides are an odd integer is always even. Which choice is the best proof of her conjecture? A) Let m and n both represent odd numbers that are the side lengths of a square. And let m+n be an even number. Therefore, m+n=n+m, which shows that the sum of two odd numbers is even. And if two odd numbers are even, then four odd numbers are also even.
B) Every time you add four odd numbers, the sum is an even number.
C) Let n be an odd number. Because 4n is a multiple of 2, it is an even number.
D) Look at these different examples: 5+5+5+5=20, 9+9+9+9=36. So if the side of a square is odd, the perimeter must be even.