Find The $x$ -Intercept of the Graph of the Equation $y = 2 \sqrt { x - 4 }$

Multiple Choice

Find the $x$ -intercept of the graph of the equation $y = 2 \sqrt { x - 4 }$ .

A) $( 0 , - 4 )$
B) $( 0,4 )$
C) $( 4,0 )$
D) $( - 4,0 )$
E) $( 0 , - 8 )$