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Use the associative property to simplify the expression.
50+20 +37
OA. 50+ 37+ 20 = 87 + 20 = 107
B. 10(5 + 2) + 37 = 10(7) + 37 = 70 +37= 107
C. (50+20) + 37 = 70 +37= 107
OD. 50+20+ 37 = 50+ 57 = 107