Find the product.7a2x7(8a9x5 - 2x4 + 2a)
A. 56a9x5 - 14x4 + 14a
B. 56a11x12 - 14a3x11 + 2a
C. 56a11x12 - 14a2x11 + 14a3x7
D. 56a11x12 - 2x4 + 2a
Answer: C
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