(5 op 6) op 2 = 5 op (6 op 2)
stmt 1: 5 op 6 = 6 op 5
so it can be multiplication or addition
now (5+6) +2 = 5 +(6+2)
also (5*6)*2 = 5*(6*2)
SUFF
stmt 2: 2 op 0 = 2
it can be addition or subtraction
now (5+6) +2 = 5 +(6+2)
but (5-6) -2 = 5 -(6-2)
hnce INSUFF
A
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