Find the derivative$\backslash (\backslash$displaystyle$\backslash$frac$\{$d$\}\{$dx$\}\backslash$Big$[\backslash$big$(\backslash$arccos$\backslash ,$x$\backslash$big$)^2\backslash$Big$]\backslash ).$

Select one:

a$.$

$\backslash (\backslash$displaystyle$\backslash$frac$\{-2\}\{\backslash$sqrt$\{1-$x$^2\}\}\backslash )$

b$.$

$\backslash (\backslash$displaystyle $\backslash$frac$\{-2\backslash$arccos x$\}\{\backslash$sqrt$\{1-$x$^2\}\}\backslash )$

c$.$

$\backslash (\backslash$big$(\backslash$arcsin x$\backslash$big$)^2\backslash )$

d$.$

$\backslash (2\backslash$arcsin x $\backslash$arccos x $\backslash )$