Bag \( B_1 \) contains \( 6 \) white and \( 4 \) blue balls, Bag \( B_2 \) contains \( 4 \) white and \( 6 \) blue balls, and Bag \( B_3 \) contains \( 5 \) white and \( 5 \) blue balls. One of the bags is select at random and a ball is drawn from it. If the ball is white, then the probability, that the ball is drawn from Bag \( B_2 \), is:
