For the Given Functions $f(x)$ And $g(x)$ , Perform the Indicated Operation $f(x)=x^{3}-9 x-23, g(x)=4 x^{3}+x^{2}+7 x+10$

Multiple Choice

For the given functions $f(x)$ and $g(x)$ , perform the indicated operation.
- $f(x) =x^{3}-9 x-23, g(x) =4 x^{3}+x^{2}+7 x+10$
Find $f(x) +g(x)$ .

A) $4 x^{3}+x^{2}-2 x-13$
B) $5 x^{3}+x^{2}-2 x-13$
C) $5 x^{3}+x^{2}-16 x-33$
D) $5 x^{3}-x^{2}-2 x+13$