Use the commutative property to simplify the expression.
i
O
+
=
A. 1 (3+4+9) = 1 (16) = 10 = 1;
OB. +*+}=1+1 = 1
O c. 1 + ( + 3) = 1 + 1 = 19 = 1
OD. ( + ) + 1 = 1 + i = 1 = 1;
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