Evaluate the Following Expression $\frac { \sec 3 \theta - 1 } { 1 - \cos 3 \theta }$

Multiple Choice

Evaluate the following expression.(? ? (?+2?n) /6,where n is a whole number) ? $\frac { \sec 3 \theta - 1 } { 1 - \cos 3 \theta }$ ?

A) - cos 3?
B) cos 3?
C) sec 3?
D) - sec 3?
E) sec 3?? - cos 3?