In the following ray diagram the correctly marked angles are. ∠i and ∠e ∠A and ∠D ∠i, ∠e and ∠D ∠r, ∠A and ∠D

∠A represents the angle of a prism while ∠D represents the angle of deviation and both are correctly marked. As angle of refraction (∠r) is the angle formed by the refracted ray with the normal and is also correctly marked. But ∠i and ∠e are the angles made by the incident ray with the normal and emergent ray with the normal respectively and thus are incorrectly marked. Hence option D is correct.