Find an Equation in Standard Form for the Ellipse That $y$

Multiple Choice

Find an equation in standard form for the ellipse that satisfies the given conditions.
-An ellipse with center at origin, length of major axis 14 and $y$ -intercepts $( 0 , \pm 6 )$

A) $\frac { x ^ { 2 } } { 6 } + \frac { y ^ { 2 } } { 7 } = 1$
B) $\frac { x ^ { 2 } } { 36 } + \frac { y ^ { 2 } } { 49 } = 1$
C) $\frac { x ^ { 2 } } { 7 } + \frac { y ^ { 2 } } { 6 } = 1$
D) $\frac { x ^ { 2 } } { 49 } + \frac { y ^ { 2 } } { 36 } = 1$