Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Complete the identity.
- $\cos \theta - \cos \theta \sin ^ { 2 } \theta =$ ?

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