For the Given Pair of Functions, Find the Requested Function $f(x)=x^{2}+4 x-3, g(x)=-9 x^{2}+7 x-8 ;(f+g)(x)$

Multiple Choice

For the given pair of functions, find the requested function.
- $f(x) =x^{2}+4 x-3, g(x) =-9 x^{2}+7 x-8 ;(f+g) (x)$

A) $-8 x^{2}-11 x-11$
B) $-10 x^{2}+11 x+11$
C) $-9 x^{2}+11 x+11$
D) $-8 x^{2}+11 x-11$