Find the Domain Of $f ( x ) = \sqrt { x - 7 }$

Multiple Choice

Find the domain of $f ( x ) = \sqrt { x - 7 }$ .

A) $[ 0 , \infty )$
B) $[ - 7 , \infty )$
C) $[ 7 , \infty )$
D) $( - \infty , 7 ) \cup ( 7 , \infty )$