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.
- $\sec \theta - \frac { 1 } { \sec \theta } =$ ?

A) $- 2 \tan ^ { 2 } \theta$
B) $\sin \theta \tan \theta$
C) $1 + \cot \theta$
D) $\sec \theta \csc \theta$