Decide Whether the Expression Is or Is Not an Identity $\frac { \csc x \cot x } { \sec x }$

Multiple Choice

Decide whether the expression is or is not an identity.
- $\frac { \csc x \cot x } { \sec x }$

A) $\csc ^ { 2 } x$
B) $\sec ^ { 2 } x$
C) $\cot ^ { 2 } x$
D) 1