At what frequency will an $40\mathrm{.}0$ mF capacitor have a reactance of $2\mathrm{.}250?$

$7\mathrm{.}96$ Hz

$1\mathrm{.}77$ Hz

$4\mathrm{.}55$ Hz

$3\mathrm{.}54$ Hz

$2\mathrm{.}55$ Hz