For the Given Pair of Functions, Find the Requested Function $f(x)=5 x-3, g(x)=-7 x^{2}-16 x+9 ;(f-g)(x)$

Multiple Choice

For the given pair of functions, find the requested function.
- $f(x) =5 x-3, g(x) =-7 x^{2}-16 x+9 ;(f-g) (x)$

A) $-7 x^{2}-11 x+6$
B) $7 x^{2}-11 x-12$
C) $7 x^{2}+21 x-12$
D) $-7 x^{2}+21 x+12$