Complete the Identity $\sin ( 2 \theta ) \tan \theta + \cos ( 2 \theta ) =$

Multiple Choice

Complete the identity.
- $\sin ( 2 \theta ) \tan \theta + \cos ( 2 \theta ) =$ ?

A) $2 \cos ( 2 \theta )$
B) $\cos ( 3 \theta )$
C) 1
D) $\sec ( 2 \theta )$