Complete the Identity $\frac { \sec x + \csc x } { \tan x + \cot x }$

Multiple Choice

Complete the identity.
-The expression $\frac { \sec x + \csc x } { \tan x + \cot x }$
is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be u the right hand side of the equation to complete the identity?

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