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 $( 0 , \pm 7 )$ and foci $( 0 , \pm 3 )$

A) $\frac { y ^ { 2 } } { 40 } + \frac { x ^ { 2 } } { 49 } = 1$
B) $\frac { y ^ { 2 } } { 9 } + \frac { x ^ { 2 } } { 49 } = 1$
C) $\frac { x ^ { 2 } } { 9 } + \frac { y ^ { 2 } } { 49 } = 1$
D) $\frac { x ^ { 2 } } { 40 } + \frac { y ^ { 2 } } { 49 } = 1$