Write the Standard Form of the Equation of the Ellipse $\frac { x ^ { 2 } } { 6 } + \frac { y ^ { 2 } } { 4 } = 1$

Multiple Choice

Write the standard form of the equation of the ellipse centered at the origin, having a horizontal major axis of 6 units and a minor axis of 4 units.

A) $\frac { x ^ { 2 } } { 6 } + \frac { y ^ { 2 } } { 4 } = 1$
B) $\frac { x ^ { 2 } } { 9 } + \frac { y ^ { 2 } } { 4 } = 1$
C) $\frac { x ^ { 2 } } { 16 } + \frac { y ^ { 2 } } { 36 } = 1$
D) $\frac { x ^ { 2 } } { 8 } + \frac { y ^ { 2 } } { 18 } = 1$
E) $\frac { x ^ { 2 } } { 4 } + \frac { y ^ { 2 } } { 9 } = 1$