Convert the Degree Measure to Radians $$\text { of } \pi \text {. }$$

Multiple Choice

Convert the degree measure to radians. Leave answer as a multiple of $$\text { of } \pi \text {. }$$
--270°

A) $- 3 \pi$
B) $- \frac { 3 \pi } { 4 }$
C) $- \frac { 3 \pi } { 2 }$
D) $\frac { 3 \pi } { 2 }$