If $$3 \sin^2 \theta - \cos \theta - 1 = 0, 0^\circ < \theta < 90^\circ$$, then what is the value of $$\cot \theta + \cosec \theta ?$$

A

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

B

$$2\sqrt{3}$$

C

$$\sqrt{5}$$

D

$$2\sqrt{5}$$