If $$7 \cos^2 \theta + 5 \sin^2 \theta - 6 = 0, (0^\circ < \theta < 90^\circ)$$, then what is the value of $$\sqrt{\frac{\cosec \theta + \tan \theta}{\sec \theta - \cot \theta}}$$

A

$$\sqrt{2} + 1$$

B

$$\sqrt{2} - 1$$

C

$$\sqrt{3} + 1$$

D

$$\sqrt{3} - 1$$