Solid ammonium carbamate it taken in an empty closed container and allowed to attain equilibrium as,

${\mathrm{NH}}_2{\mathrm{COONH}}_4\left(s\right)\rightleftharpoons 2{\mathrm{NH}}_3\left(g\right)+{\mathrm{CO}}_2\left(g\right);K_p=500$

Choose the incorrect statements :

On increasing the volume of container, total pressure decreases at new equilibrium.

On increasing temperature, total pressure increases at new equilibrium

On addition of more solid at equilibrium total pressure increases at new equilibrium

Equilibrium total pressure is 15 atm