A ray of light is incident on an equilateral triangular prism parallel to its base as shown in the figure. The ray just fails to emerge from the face AC. If `mu` be the refractive index of the prism then the relation(s) is/are :

Options

A. `2sin^(-1)((1)/(mu))=pi//3`
B. `sin^(-1)((1)/(mu))+sin^(-1)((1)/(2mu))=(pi)/(6)`
C. `sin^(-1)((1)/(mu))+sin^(-1)((1)/(2mu))=(pi)/(3)`
D. `sin^(-1)((1)/(mu))+sin^(-1)((mu)/(4))=(pi)/(3)`