Velocity of light in a liquid is `1.5 xx 10^8 ms^(-1)` and in air,it is `3xx10^8 m s^(-1)`.If a ray of light passes from this liquid to air ,calculate the value of critical angle.

Options

A. equal to `sin^(-1) (2//3)`
B. less than `sin^(-1) (2//3)`
C. equal to or greater than `sin^(-1) (3//4)`
D. equal to or less than `sin^9-1) (3//5)`.