Find the Standard Form of the Equation of the Ellipse $( \pm 9,0 )$

Multiple Choice

Find the standard form of the equation of the ellipse with vertices $( \pm 9,0 )$ and eccentricity $e = \frac { 7 } { 9 }$ .

A) $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 49 } = 1$
B) $\frac { x ^ { 2 } } { 49 } + \frac { y ^ { 2 } } { 81 } = 1$
C) $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 32 } = 1$
D) $\frac { x ^ { 2 } } { 32 } + \frac { y ^ { 2 } } { 81 } = 1$
E) $\frac { x ^ { 2 } } { 49 } - \frac { y ^ { 2 } } { 81 } = 1$