A Person in a Boat Sees a Fish in the Water

Multiple Choice

A person in a boat sees a fish in the water (n = 1.33) ,the light rays making an angle of 40 $\degree$ relative to the water's surface.What is the true angle (in degrees) relative to the water's surface of the same rays when beneath the surface?

A) 40
B) 35
C) 50
D) 55
E) 61