What is the value of $$\sqrt{3}- \sec 60^\circ$$ ?

A

$$\sqrt{3}-2$$

B

$$\frac{1-\sqrt{6}}{\sqrt{2}}$$

C

$$\frac{2\sqrt{3}-\sqrt{6}}{2\sqrt{2}}$$

D

$$\frac{1-3\sqrt{2}}{3}$$