There is a circular tube in a vertical plane. Two liquids which do not mix and of densities $$d_1$$ and $$d_2$$ are filled in the tube. Each liquid subtends 90° angle at centre. Radius joining their interface makes an angle $$\alpha$$ with vertical. Ratio $$\frac{d_1}{d_2}$$ is:

A

$$\frac{1+\sin\alpha}{1-\sin\alpha}$$

B

$$\frac{1+\cos\alpha}{1-\cos\alpha}$$

C

$$\frac{1+\tan\alpha}{1-\tan\alpha}$$

D

$$\frac{1+\sin\alpha}{1-\cos\alpha}$$