A circular copper loop is placed perpendicular to a uniform magnetic field of $0\mathrm{.}75$ T$.$ Due to external forces, the area of the loop decreases at a rate of $7\mathrm{.}26{10}^{-3}\frac{m^2}{s}.$ Determine the induced emf in the loop.

$3\mathrm{.}1{10}^{-4}V$

$6\mathrm{.}3{10}^{-4}V$

$1\mathrm{.}2{10}^{-3}V$

$5\mathrm{.}4{10}^{-3}V$

$3\mathrm{.}1$V