The Figure Shows a Point Source of Unpolarized Light at a Inside

The figure shows a point source of unpolarized light at A inside a uniform transparent crystal. The ray AO in the crystal strikes the plane surface SS' making an angle of 30° with the normal. This angle is the critical angle for transmission into air.
-Which one of the following statements is true concerning this situation?

A) When the angle of incidence is equal to the Brewster angle, the angle of refraction is 13°.
B) When the angle of incidence is equal to the Brewster angle, the angle of refraction is 63°.
C) When the angle of incidence is equal to the Brewster angle, the angle of refraction is 42°.
D) Since the Brewster angle is less than the critical angle, there is no refraction when the angle of incidence is equal to $\theta$ _B.
E) Since the Brewster angle is greater than the critical angle, there is no refraction when the angle of incidence is equal to $\theta$ _B.