What is the value of $$\cos \theta + \sin \theta$$?

I. $$\sec \theta + \cosec \theta = 5$$

II. $$\sin 2\theta = \frac{1}{2}$$

A

if the statement I alone is sufficient to answer the question.

B

if the statement II alone is sufficient to answer the question.

C

if both the statements I and II are sufficient to answer the question but neither statement alone is sufficient.

D

if both the statements I and II together are not sufficient to answer the question and additional data is required.