Nyala is bungee jumping. The following function gives her elevation, in meters, $t$ seconds after jumping:

$E(t)=\frac{80sin(0\mathrm{.}6t)}{t}+15$

What is the instantaneous rate of change of Nyala's elevation after $5$ seconds?

Choose $1$ answer:

$-9\mathrm{.}96$ meters per second

$-9\mathrm{.}96$ seconds per meter

$17\mathrm{.}26$ meters per second

$17\mathrm{.}26$ seconds per meter