Find the Exact Value of the Real Number Y $$y = \csc ^ { - 1 } ( - 1 )$$

Multiple Choice

Find the exact value of the real number y.
- $$y = \csc ^ { - 1 } ( - 1 )$$

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