$\frac{d}{dx}(si{n}^{-1}x){|}_x||=\frac{1}{2}=$

For which of the following functions is the chain rule an appropriate method to find the derivative with respect to $x?$

I. $y=sin(3x^2)$

II$.y=e^{x}tanx$

III. $y=\frac{1}{8x^4-2x}$

II only

III only

I and III only

Am

$\frac{\frac{1}{\sqrt[\phantom{2}]{1-(\frac{1}{2}{)}^2}}}{co{s}^{-1}(\frac{1}{2})}$

$($D$)-csc(\frac{1}{2})cot(\frac{1}{2})$