Suppose the medium in the previous question is water. Select the correct option(s) from the list given in that question.

Here, the speed of light reduces to . In a medium, the speed depends on the relative motion of the observer. As A moves towards the source and B is stationary, . And as C moves away from source, . So option (A) is correct.

If A and C move with same speed in opposite directions, then option (D) might also be true.