PASCAL 2009 Problem 7

Past Contests PASCAL 2009
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1

In the diagram, \triangle{PQR} is right-angled at Q,PQ is horizontal and QR is vertical. What are the coordinates of Q?

Image

Answer Choices
A. (5,2)
B. (5,0)
C. (5,1)
D. (4,1)
E. (1,5)