Arrange in ascending powers of x.3xy7 - 18m2 - 15mx4 + 8x3 - 17m3x2

A. -18m2 + 8x3 - 17m3x2 - 15x4 + 3xy7
B. -18m2 + 3xy7 - 17m3x2 + 8x3 - 15mx4
C. -15mx4 + 8x3 - 17m3x2 + 3xy7 - 18m2
D. 3m2 - 18x3 - 15m3x2 + 8x4 - 17xy7


Answer: B

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