Which equation can be used to find the measure of ?

The ray O-P pointing top right cuts the angle N-O-Q measuring 160 degrees into two angles: N-O-P measuring 105 degrees and angle P-O-Q.

A.
160° + 55° =

B.
160° – 55° =

C.
160° – 105° =

D.
160° + 105° =

B.

160° - 105° = 55°