= 7 + 3² × 21
= 7 + 9 × 21
= 7 + 189
= 196
↬ Hence the answer is D. 196
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(9 - 2) + 3² × 21
= 7 + 3² × 21
= 7 + 9 × 21
= 7 + 189
= 196
↬ Hence the answer is D. 196