NEET UG CHEMISTRY MCQ: Equilibrium

At a certain temperature, $K_{\mathrm{P}}$ for the dissociation of solid $\mathrm{CaCO}_3$ is $4.5 \times 10^{-2}$ atm and for the reaction $\mathrm{C}(\mathrm{s})+\mathrm{CO}_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{g}),$ the $K_{\mathrm{P}}$ value is $2.0 \mathrm{~atm}.$ The pressure of carbon monoxide at this temperature, when solid carbon $\mathrm{CaO}$ and $\mathrm{CaCO}_3$ are mixed together and allowed to attain equilibrium is