A: A gas with higher critical temperature is adsorbed more than a gas with lower critical temperature 

R: At higher temperature the gas with higher Tc is more easily liquefiable         

Critical Temperature Tc: The temperature point at which a substance may exist as a liquid is referred to as the substance's critical temperature. No matter how much pressure is applied, the substance (in its vapour or gaseous state) cannot be liquefied at temperatures higher than the critical point.

The gases which have more Tc will get liquefied easily and its adsorption capacity is also high 

Hence the correct option is A.