A Fish Is 2

Multiple Choice

A fish is 2.1 m beneath the surface of a still pond of water.At what maximum angle can the fish look toward the surface (measured with respect to the normal to the surface) in order to see a fisherman sitting on a distant bank? (for water,n = 1.333)

A) 18.6°
B) 48.6°
C) 37.2°
D) The fish will not see the fisherman at any angle.