Which of the Following Is Equivalent to the Given Expression $\frac { \cos ^ { 2 } x } { 1 + \sin x }$

Multiple Choice

Which of the following is equivalent to the given expression? $\frac { \cos ^ { 2 } x } { 1 + \sin x }$ ​

A) ​ $\cot x \cos x + \tan x$
B) ​ $\csc x + \cot x$
C) ​ $1 - \sin x$
D) ​ $\tan x + \cos x$
E) ​ $\tan x \cot x - \sin x$