A Fish Is 1 $\degree$ B)372 $\degree$ C)486 $\degree$ D)The Fish Will Not See the Fisherman at Any Angle

Multiple Choice

A fish is 1.2 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 $\degree$
B) 37.2 $\degree$
C) 48.6 $\degree$
D) The fish will not see the fisherman at any angle.