which expression is an example of the commutative property of addition?

A. 4 x 6 x 5 = 4 x 5 x 6
B. (4 x 5) x 6 = 4 x (5 x 6)
C. 6 + 4 + 5 = 4 + 6 + 5
D. 5 (4 + 6) = 50

C. 6 + 4 + 5 = 4 + 6 + 5