A Diver Shines Light Up to the Surface of a Flat

Multiple Choice

A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30 $\degree$ relative to the normal.If the index of refraction of water and glass are 1.33 and 1.5,respectively,at what angle (in degrees) does the light leave the glass (relative to its normal) ?

A) 26
B) 35
C) 42
D) 22
E) 48