A, B and C are three optical media of respective critical angles `C_1`, `C_2` and `C_3`. Total internal reflection of light can occur from A and B and also from B to C but not from C to A. Then the correct relation between critical angles is

A. `C_1 gt C_2 gt C_3`

B. `C_1=C_2=C_3`

C. `C_3 gt C_1 gt C_2`

D. `C_1 lt C_2 lt C_3`