A bag contains 2 black balls, 4 yellow balls and 4 white balls. Event A is defined as drawing a white ball on the first draw and event B is defined as drawing a black ball on the second draw.
If two balls are drawn from the bag, one after the other and not replaced, what is P(B|A) expressed in simplest form?

A. 1/9
B. 1/5
C. 2/9
D. 2/5