Find the Standard Form of the Equation of the Ellipse $( - 3,0 ) , ( 3,0 ) ; x$

Multiple Choice

Find the standard form of the equation of the ellipse satisfying the given conditions.
-Foci: $( - 3,0 ) , ( 3,0 ) ; x$ -intercepts: $- 4$ and 4

A) $\frac { x ^ { 2 } } { 16 } + \frac { y ^ { 2 } } { 7 } = 1$
B) $\frac { x ^ { 2 } } { 7 } + \frac { y ^ { 2 } } { 16 } = 1$
C) $\frac { x ^ { 2 } } { 9 } + \frac { y ^ { 2 } } { 7 } = 1$
D) $\frac { x ^ { 2 } } { 9 } + \frac { y ^ { 2 } } { 16 } = 1$