The plot shows the variation of $-\ln K_p$  versus temperature for the two reactions.

$M_{\left(s\right)}+\frac{1}{2}{O}_{2\left(g\right)}\to M{O}_{\left(s\right)}$ and $C_{\left(s\right)}+\frac{1}{2}{O}_{2\left(g\right)}\to C{O}_{\left(g\right)}$

Identify the correct statement. 

At  $T<1200K$,oxidation of carbon is unfavorable.

Oxidation of carbon is favourable at all temperatures.

At  $T<1200K$, the reaction $M{O}_{\left(s\right)}+C_{\left(s\right)}\to M_{\left(s\right)}+C{O}_{\left(g\right)}$ is spontaneous.

At  $T>1200K$, carbon will reduce $M{O}_{\left(s\right)}$ to  $M_{\left(s\right)}$.