Find the Reference Angle $\theta ^ { \prime }$ For the Given Angle

Multiple Choice

Find the reference angle $\theta ^ { \prime }$ for the given angle $\theta$ .
$\theta = 312 ^ { \circ }$

A) $138 ^ { \circ }$
B) $- 222 ^ { \circ }$
C) $58 ^ { \circ }$
D) $48 ^ { \circ }$
E) $38 ^ { \circ }$