Rewrite the Given Angle in Radian Measure as a Multiple $\pi$

Multiple Choice

Rewrite the given angle in radian measure as a multiple of $\pi$ . (Do not use a calculator.)
$- 110 ^ { \circ }$

A) $- \frac { 7 \pi } { 18 }$
B) $- \pi$
C) $- \frac { 11 \pi } { 36 }$
D) $- \frac { 11 \pi } { 18 }$
E) $- \frac { 5 \pi } { 9 }$