$($a$)\frac{1}{2}$

$($b$)1$

$($c$)2$

$($d$)\frac{}{2}$

$($e$)$

$17.$ Let $f$ be an odd function which has second derivative. Which of the following is always true?

$($I$)f(0)=0$;

$($II$)f^{\text{'}}(0)=0$;

$($III$)f^{\text{'}\text{'}}(0)=0.$

$($a$)($I$)$ and $($II$)$ only

$($b$)($II$)$ and $($III$)$ only

$($c$)($III$)$ and $($I$)$ only

$($d$)$ all of the above

$($e$)$ none of the above