The figure shows the path of ray of light propagating from medium 1 to medium 2. The refractive index of medium 1 with respect to medium 2 is …………………………. .
A. `(sin45^(@))/(sin60^(@))`
B. `(sin60^(@))/(sin45^(@))`
C. `(sin45^(@))/(sin30^(@))`
D. `(sin30^(@))/(sin45^(@))`