In the diagram, it is only possible to travel along an edge in the direction indicated by the arrow. Hazel studied the figure, and determined all the possible routes from A to B. She selected one of these routes at random. What is the probability that she selected a route which passes through X?
Answer Choices
A. \frac{8}{11}
B. \frac{3}{11}
C. 1
D. \frac{9}{11}
E. \frac{6}{11}