If light travels a distance `x` in `t_(1)` sec in air and `10x` distance in `t_(2)` sec in a medium, the critical angle of the medium will be

Options

A. `tan^(-1) (t_(1)/t_(2))`
B. `sin^(-1)(t_(1)/t_(2))`
C. `sin^(-1) ((10 t_(1))/t_(2))`
D. `tan^(-1) ((10t_(1))/t_(2))`

Answer

c