Find the Eccentricity of the Ellipse $144 x ^ { 2 } + y ^ { 2 } = 144$

Multiple Choice

Find the eccentricity of the ellipse.
- $144 x ^ { 2 } + y ^ { 2 } = 144$

A) $\frac { \sqrt { 143 } } { 12 }$
B) $\sqrt { 143 }$
C) $\sqrt { 145 }$
D) $\frac { \sqrt { 145 } } { 12 }$