Convert the Degree Measure to Radians $10 \pi$ B) $\frac { 19 \pi } { 2 }$

Multiple Choice

Convert the degree measure to radians. Leave answer as a multiple of π.
-1800°

A) $10 \pi$
B) $\frac { 19 \pi } { 2 }$
C) $\frac { 21 \pi } { 2 }$
D) $20 \pi$