Find an Equation of the Parabola Described $( 4,0 ) ;$

Multiple Choice

Find an equation of the parabola described.
-Focus at $( 4,0 ) ;$ vertex at $( 0,0 )$

A) $y ^ { 2 } = 16 x$
B) $x ^ { 2 } = 16 y$
C) $x ^ { 2 } = 4 y$
D) $y ^ { 2 } = 4 x$