In the right-angled triangle PQR,PQ=QR. The segments QS,TU and VW are perpendicular to PR, and the segments ST and UV are perpendicular to QR, as shown. What fraction of \Delta{PQR} is shaded?
Answer Choices
A. \frac{3}{16}
B. \frac38
C. \frac{5}{16}
D. \frac{5}{32}
E. \frac{7}{32}