Find the Eccentricity of the Conic $$\frac { x ^ { 2 } } { 100 } + \frac { y ^ { 2 } } { 9 } = 1$$

Multiple Choice

Find the Eccentricity of the conic. $$\frac { x ^ { 2 } } { 100 } + \frac { y ^ { 2 } } { 9 } = 1$$

A) Eccentricity: $e = \frac { 3 \sqrt { 91 } } { 91 }$
B) Eccentricity: $e = \frac { \sqrt { 100 } } { 3 }$
C) Eccentricity: $e = \frac { \sqrt { 91 } } { 100 }$
D) Eccentricity: $e = \frac { \sqrt { 91 } } { 3 }$
E) Eccentricity: $e = \frac { \sqrt { 91 } } { 10 }$