Convert the Degree Measure to Radians $3 \pi$ B) $- \frac { 3 \pi } { 4 }$

Multiple Choice

Convert the degree measure to radians. Leave answer as a multiple of π.
-270°

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