Find the Domain of X in the Expression $\sqrt { 16 - x ^ { 2 } }$

Multiple Choice

Find the domain of x in the expression $\sqrt { 16 - x ^ { 2 } }$ .

A) $( - \infty , - 4 ] \cup [ 4 , \infty )$
B) $( - \infty , 4 ]$
C) $[ - 4,4 ]$
D) $[ - 4 , \infty )$
E) $( - \infty , \infty )$