Complete the Identity $\sec ^ { 4 } \theta + \sec ^ { 2 } \theta \tan ^ { 2 } \theta - 2 \tan ^ { 4 } \theta =$

Multiple Choice

Complete the identity.
- $\sec ^ { 4 } \theta + \sec ^ { 2 } \theta \tan ^ { 2 } \theta - 2 \tan ^ { 4 } \theta =$ ?

A) $4 \sec ^ { 2 } \theta$
B) $\sec ^ { 2 } \theta + 2$
C) $\tan ^ { 2 } \theta - 1$
D) $3 \sec ^ { 2 } \theta - 2$