use the commutative property to simplify the expression. 1/6 + 2/5 + 5/6
A. (1/6+2/5) + 5/6 = 17/30 + 25/30 = 42/30 = 1 2/5
B.1/6 + (2/5+5/6) = 5/30 + 37/30 = 42/30 =1 2/5
C.1/30(5 + 12 + 25)=1/30(42) = 42/30 = 1 3/5
D. (1/6+5/6) + 2/5 = 1 + 2/5 = 1 2/5