$(1$ point$)$

$f(x)=-2tanx,on(-,)$

a$)$ Find the first and second derivatives.

$f^{\text{'}}(x)=$

$f^{\text{'}\text{'}}(x)=$

$$

$$

b$)$ Identify the graph that displays $f$ in blue and $f^{\text{'}\text{'}}$ in red. $?$ hat$($~~$)$

A$.$

C

B$.$

D$.$