A thin square plate, $10$ cm on a side, is heated to $8000$C$.$ If the emissivity is $0\mathrm{.}6,$ what is the total rate of radiation of energy from the plate?$[$Stefan$\text{'}$s constant $=5\mathrm{.}67$ x $10-8$ W$/$m$2$K$4]$

a$.$

$991\mathrm{.}0$ W

b$.$

$901\mathrm{.}9$ W

c$.$

$199\mathrm{.}0$ W

d$.$

$109\mathrm{.}9$ W