Question $9$

$5\mathrm{.}01cm$ equals how many $km?$

$5\mathrm{.}01{10}^{-5}$

$5\mathrm{.}01{10}^{+4}$

$5\mathrm{.}01{10}^{-3}$

$5\mathrm{.}01{10}^{-5}$

$5\mathrm{.}01{10}^5$