Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Amongst He, Ne, Ar and Kr. \( 1 \,\mathrm{g} \) of activated charcoal adsorbs more of Kr.
Reason R: The critical volume \( V_c \left( \mathrm{cm^3 \, mol^{-1}} \right) \) and critical pressure \( P_c \) \( \left( \mathrm{atm} \right) \) is highest for Krypton but the compressibility factor at critical point \( Z_c \) is lowest for Krypton.
In the light of the above statements, choose the correct answer from the options given below:
