For the Given Functions F and G, Find the Requested $f ( x ) = 16 - x ^ { 2 } ; g ( x ) = 4 - x ; \quad$

Multiple Choice

For the given functions f and g, find the requested function and state its domain. Write the domain in interval notation.
- $f ( x ) = 16 - x ^ { 2 } ; g ( x ) = 4 - x ; \quad$ Find $f + g$

A) $( f + g ) ( x ) = - x ^ { 2 } - x + 20 ; ( \infty , \infty )$
B) $( f + g ) ( x ) = x ^ { 3 } - 4 x ^ { 2 } - 16 x + 64 ; ( \infty , \infty )$
C) $( f + g ) ( x ) = 4 + x ; ( \infty , - 4 ) \cup ( - 4 , \infty )$
D) $( f + g ) ( x ) = - x ^ { 2 } + x + 12 ; ( \infty , \infty )$