Complete the Identity $\cos \theta - \cos \theta \sin ^ { 2 } \theta =$

Multiple Choice

Complete the identity.
- $\cos \theta - \cos \theta \sin ^ { 2 } \theta =$ ?

A) $\cos ^ { 3 } \theta$
B) $\tan ^ { 2 } \theta$
C) $\sin \theta$
D) $\sec ^ { 2 } \theta$