If $$\cot \theta = \cot 30^{\circ} \cot 60°^{\circ}$$ and $$\theta$$ is an acute angle, then $$2\theta$$ is equal to:

A

$$45^{\circ}$$

B

$$60^{\circ}$$

C

$$30^{\circ}$$

D

$$90^{\circ}$$