The value of $$\frac{\sin^2 60^\circ + \cos^2 30^\circ - \sec 35^\circ.\sin 55^\circ}{\sec 60^\circ+\cosec 30^\circ}$$ is equal to:

A

$$\frac{1}{3}$$

B

$$\frac{1}{4}$$

C

$$\frac{1}{2}$$

D

$$\frac{1}{8}$$