Convert the Angle in Degrees to Radians $\pi .$ - $- 105 ^ { \circ }$

Multiple Choice

Convert the angle in degrees to radians. Express the answer as multiple of $\pi .$
- $- 105 ^ { \circ }$

A) $- \frac { 7 \pi } { 12 }$
B) $- \frac { 6 \pi } { 11 }$
C) $- \frac { 12 \pi } { 7 }$
D) $- \frac { 8 \pi } { 13 }$