A thin ray of light is moving through a transparent liquid. It reaches the surface as illustrated, with an angle of incidence of $40^{\circ}$. The refractive index of the liquid is $1.5$. What is the angle of refraction when the light passes into the air?
- A$25^{\circ}$
- B$27^{\circ}$
- C$60^{\circ}$
- D$75^{\circ}$