Find the Standard-Form Equation of the Ellipse Centered at the Origin

Multiple Choice

Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.
-An ellipse with vertices $( 0 , \pm 9 )$ and foci at $( 0 , \pm 2 \sqrt { 3 } )$ .

A) $\frac { x ^ { 2 } } { 69 } + \frac { y ^ { 2 } } { 81 } = 1$
B) $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 69 } = 1$
C) $\frac { x ^ { 2 } } { 69 } + \frac { y ^ { 2 } } { 93 } = 1$
D) $\frac { x ^ { 2 } } { 12 } + \frac { y ^ { 2 } } { 81 } = 1$