A parallel glass slab of refractive index `sqrt3` is placed in contact with an equilateral prism of refractive index `sqrt2`. A ray is incident on left surface of slab as shown. The slab and prism combination is surrounded by air. The magnitude of minimum possible deviation of this ray by slab-prism combination is:
A. `30^(@)`
B. `45^(@)`
C. `60^(@)`
D. `60^(@)-sin^(-1)sqrt((2)/(3))`
