i honestly feel bad for charli fanpages i mean its clear that charli doesnt care abut them because if she did she wouldn't be doing the stuff shes getting cancelled for right now and all she does is cry on her livestreams then everyone forgives her

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15