Refraction of a laser beam

The above diagram is a green laser beam set to focus on Point O of the screen on the right. If a glass prism is put between the laser device and the screen, which of the following statements is correct?

Suppose that the total internal reflection by the prism does not occur and the refractive index of a glass is larger than that of the air.

a) The arrival point of the laser beam on the screen moves to $$+y$$ direction.
b) If we increase the refractive index of the prism in this state, then the arrival point of the laser beam on the screen moves to $$-y$$ direction.
c) If we replace the green laser beam with a red laser beam in this state, then the arrival point of the laser beam on the screen moves to $$-y$$ direction.

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