What is the lateral shift of a ray refracted through a parallel-sided glass slab of thickness 'h' in terms of the angle of incidence 'i' and angle of refraction 'r', if the glass slab is placed in air medium?

A

$$\frac{h\tan(i-r)}{\tan r}$$

B

$$\frac{h\sin(i-r)}{\cos r}$$

C

h

D

$$\frac{h\cos(i-r)}{\sin r}$$