If (f+g) (x) = 7x^2-11x+3, which of these could be f (x) and g (x) ?

A. f (x) = x^3+7x^2-2x;

g (x) = -9x+3

B. f (x) = -x^3+x^2+3;

g (x) = x^3+6x^2-11x

C. f (x) = -8x+1;

g (x) = 7x^2-3x+3

D. f (x) = 3x^2-6x-4;

g (x) = 4x^2-5x+1

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