(4x^{2} - 3x - 1) + (-3x^{2} + 5x - 8)?

A: x^{2} + 2x + 9

B: 7x^{2} - 8x + 8

C: x^{4} - 2x^{2} - 9

D: x^{2} + 2x - 9

The correct answer is D

D: x2 + 2x - 9

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