Find the sum:
(-10x^3 + 4x + 5) + (5x^2 - 2x)
O A. 10x^2 - 5x^2 + 2x
O B. -5x^2 + 5x^2 + 5
O C. -10x^3 + 5x + 5
D. -10x^3 + 5x^2 + 2x + 5
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