A ray of monochromatic light travels through a semicircular glass block of refractive index nglass=1.60n_{\text{glass}} = 1.60nglass=1.60 and meets the flat boundary, which is in contact with a liquid of refractive index nliquid=1.30n_{\text{liquid}} = 1.30nliquid=1.30, at an angle of incidence of 50∘50^\circ50∘.
Which letter represents the correct path of the light ray after it reaches the boundary?
Path A
Path B
Path C
Path D