Complete the Sentence So the Result Is an Identity $\cot x$

Multiple Choice

Complete the sentence so the result is an identity. Let x be any real number.
-Write $\cot x$ in terms of $\sin x$ .

A) $\frac { \pm \sqrt { 1 - \sin ^ { 2 } x } } { 1 - \sin ^ { 2 } x }$
B) $\frac { \pm \sqrt { 1 - \sin ^ { 2 } x } } { \sin x }$
C) $\pm \sqrt { 1 - \sin ^ { 2 } x }$
D) $\frac { \pm \sin x \sqrt { 1 - \sin ^ { 2 } x } } { 1 - \sin ^ { 2 } x }$