Au unpolarised light is incident at an inteiface of two dielectric media having refractive indices of 2 (incident medium) and $$2\sqrt{3}$$ (medium) respectively. To satisfy the condition that reflected and refracted rays are perpendicular to each other, the angle of incidence is ___.

A

$$10^{\circ}$$

B

$$30^{\circ}$$

C

$$60^{\circ}$$

D

$$45^{\circ}$$