Solve for the Indicated Letter $S=x^{2}+y^{2}-8 x+10 y-4$ For $x$
A) $x=4 \pm \sqrt{12-y^{2}-10 y-S}$

Solve for the indicated letter.
-Solve $S=x^{2}+y^{2}-8 x+10 y-4$ for $x$ .

A) $x=4 \pm \sqrt{12-y^{2}-10 y-S}$
B) $x=4 \pm \sqrt{68-y^{2}-10 y+S}$
C) $x=4 \pm \sqrt{20-y^{2}-10 y+S}$
D) $x=4 \pm \sqrt{16-y^{2}-10 y+S}$