Which of the Following Is Identical To $\sin ^{2} x+\sin ^{2} x \tan ^{2} x$

Which of the following is identical to $\sin ^{2} x+\sin ^{2} x \tan ^{2} x$ ?

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