In the diagram, MNPQ is a rectangle with points M,N,P, and Q on the sides of \triangle{XYZ}, as shown. If \angle{ZNM}=68^\circ and \angle{XYZ}=55^\circ, what is the measure of \angle{YXZ}?
Answer Choices
A. 77^\circ
B. 113^\circ
C. 93^\circ
D. 97^\circ
E. 103^\circ