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Fpr L=1,2,3 the box Bk contains k red ba...

Fpr L=1,2,3 the box `B_k` contains k red balls and (k+1) white balls . Let `P(B_1) =1/2` , `P(B_(2))=1/3 ,P(B_3)=1/6` . A box is selected at random and a ball is drawn from it . If a red ball is drawn, then the probability that it has come from box `B_2` is

A

` (35)/(78)`

B

`(14)/(39)`

C

`(10)/(13)`

D

`(12)/(13)`

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The correct Answer is:
A
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