Platinum resistance thermometer can be used upto antimony point which is $\_\_\_\_\_\_\_\_\_$ C$,$ and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure.

$961\mathrm{.}93$

$630\mathrm{.}74$

$1064\mathrm{.}43$

$1261\mathrm{.}93$