Rewrite the polynomial in descending order.x6 + x + 9x3 + 1 + 5x2
A. 9x3 + 5x2 + 1 + x6 + x
B. x + 5x2 + 9x3 + x6 + 1
C. x6 + 9x3 + 5x2 + x + 1
D. 1 + x + 5x2 + 9x3 + x6
Answer: C
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