Write the Equation of the Ellipse That Has Its Center $$\frac { x ^ { 2 } } { 80 } + \frac { y ^ { 2 } } { 81 } = 1$$

Multiple Choice

Write the equation of the ellipse that has its center at the origin,focus at (1,0) and vertex at (9,0) . ​

A) $$\frac { x ^ { 2 } } { 80 } + \frac { y ^ { 2 } } { 81 } = 1$$
B) $\frac { x ^ { 2 } } { 1 } + \frac { y ^ { 2 } } { 9 } = 1$
C) $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 80 } = - 1$
D) $\frac { x ^ { 2 } } { 81 } - \frac { y ^ { 2 } } { 80 } = 1$
E) $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 80 } = 1$