Light Rays That Hit the Surface of a Block of Plexiglas

Multiple Choice

Light rays that hit the surface of a block of Plexiglas are bent, or refracted, according to Snell's Law:
N₁sin $\theta$ ₁ = n₂sin $\theta$ ₂.
Find the angle of refraction $\theta$ ₂ of Plexiglas if its refraction index n₂ = 1.51, the refraction index of air n₁ = 1, and light enters the Plexiglas at an angle ?₁ = 53°. Round your answer to 1 decimal place.

A) 56.9°
B) 31.9°
C) 58.1°
D) 27.9°