A student performs the experiment on tracing the path of ray of light passing through a rectangular glass slab for different angles of incidence. He measures the angle of incidence `anlge i`, angle refraction `angle r` and angle of emergence `angle e` for all his observation. he would find that in all cases.

Options

A. `angle i` is more than `angle r` but equal to `angle e`
B. `ange i` is less than `angle r` but (nearly) equal to `angle e`
C. `angle r` is more than `angle e` but equal to `angle r`.
D. `angle i` is less than `angle e` but equal to `angle r`.