In the diagram, P Q R S T is a pentagon with P Q=8, Q R=2, R S=13, S T=13, and T P=8. Also, \angle T P Q=\angle P Q R=90^{\circ}. What is the area of pentagon P Q R S T ?
Answer Choices A. 76 B. 84 C. 92 D. 100 E. 108
