A Beam of Light Traveling in Air Strikes a Glass

A beam of light traveling in air strikes a glass slab at an angle of incidence less than 90°. After entering the glass slab, what does the beam of light do? (There could be more than one correct
Choice.)

A) It follows the normal to the glass slab.
B) I follows the same path as before it struck the glass.
C) It bends away from the normal at the point of contact.
D) It slows down.
E) It bends closer to the normal at the point of contact.