$$1 + 2 \tan^2 \theta + 2 \sin \theta \sec^2 \theta, 0^\circ < \theta < 90^\circ$$, is equal to:

A

$$\frac{1 - \cos \theta}{1 + \cos \theta}$$

B

$$\frac{1 + \cos \theta}{1 - \cos \theta}$$

C

$$\frac{1 - \sin \theta}{1 + \sin \theta}$$

D

$$\frac{1 + \sin \theta}{1 - \sin \theta}$$