If $$(1 + \cot^2 \theta) + (1 + (\cot^2 \theta)^{-1})$$ is equal to k, then $$\sqrt{k} = ?$$

A

$$\sin \theta \sec \theta$$

B

$$\cosec \theta \cos \theta$$

C

$$\cosec \theta \sec \theta$$

D

$$\sin \theta \cos \theta$$