Let $$y = y(x)$$ be the solution curve of the differential equation $$\sec y \frac{dy}{dx} + 2x\sin y = x^3\cos y$$, $$y(1) = 0$$. Then $$y(\sqrt{3})$$ is equal to :

A

$$\frac{\pi}{3}$$

B

$$\frac{\pi}{6}$$

C

$$\frac{\pi}{12}$$

D

$$\frac{\pi}{4}$$