Three urns A, B, and C contain red, black; red, black; and red, black balls, respectively. One of the urns is selected at random, and a ball is drawn. If the ball drawn is black, then the probability that it is drawn from urn A is:
- A
- B
- C
- D
Three urns A, B, and C contain red, black; red, black; and red, black balls, respectively. One of the urns is selected at random, and a ball is drawn. If the ball drawn is black, then the probability that it is drawn from urn A is:
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