Which one of the following equations illustrates the commutative property?
A8 + 3 = 4 + 7
BIf 3 + 5 = a, then a=3+5
C2 + b = b + 2
D3(2 + 5) = 6 + 15
A8 + 3 = 4 + 7
BIf 3 + 5 = a, then a=3+5
C2 + b = b + 2
D3(2 + 5) = 6 + 15