In the diagram, P Q and R S intersect at T. If \angle S T Q=140^{\circ} and \angle P T U=90^{\circ}, what is the measure of \angle R T U ?
Answer Choices
A. 30^{\circ}
B. 90^{\circ}
C. 50^{\circ}
D. 40^{\circ}
E. 140^{\circ}
In the diagram, P Q and R S intersect at T. If \angle S T Q=140^{\circ} and \angle P T U=90^{\circ}, what is the measure of \angle R T U ?
Answer Choices
A. 30^{\circ}
B. 90^{\circ}
C. 50^{\circ}
D. 40^{\circ}
E. 140^{\circ}