Evaluate the Expression $\cos \theta$ , Given That $\tan \theta = - \frac { 4 } { 3 }$

Multiple Choice

Evaluate the expression.
-Find $\cos \theta$ , given that $\tan \theta = - \frac { 4 } { 3 }$ and $\theta$ is in quadrant II.

A) $\frac { \sqrt { 25 } } { 4 }$
B) $- \frac { \sqrt { 25 } } { 3 }$
C) $\frac { 3 \sqrt { 25 } } { 25 }$
D) $- \frac { 3 \sqrt { 25 } } { 25 }$