Six identical rectangles with height h and width w are arranged as shown. Line segment PQ intersects the vertical side of one rectangle at X and the horizontal side of another rectangle at Z. If right-angled \triangle{XYZ} has YZ=2XY, then \displaystyle\frac hw equals
Answer Choices
A. \frac{2}{3}
B. \frac{1}{2}
C. \frac{3}{8}
D. \frac{1}{3}
E. \frac{3}{4}