The Measures of Two Angles of ABC (Shown in the Illustration)

Multiple Choice

The measures of two angles of ABC (shown in the illustration) are given. Find the measure of the third angle, if $m ( \angle A ) = 51.08 ^ { \circ }$  and $m ( \angle B ) = 56.46 ^ { \circ }$ .

A) $71.46 ^ { \circ }$
B) $72.46 ^ { \circ }$
C) $82.47 ^ { \circ }$
D) $72.57 ^ { \circ }$
E) $72.36 ^ { \circ }$