A wire carrying a current is shaped in the form of a circular loop of radius $3\mathrm{.}00$ mm $.$ If the magnetic field strength at its center is $2\mathrm{.}5$ mT with no external magnetic fields contributing to it$,$ what is the magnitude of the current that flows through the wire?

$4\mathrm{.}0$ A

$12\mathrm{.}0$ A

$8\mathrm{.}0$ A

$16\mathrm{.}0$ A