In context with the industrial preparation of hydrogen from water gas (CO+H₂), which of the following is the correct statement ? A) CO and H₂, are fractionally separated using differences in their densities B) CO is removed by absorption in aqueous Cu₂Cl₂ solution C) H₂ is removed through occlusion with Pd D) CO is oxidised to CO₂ with steam in the presence of a catalyst followed by absorption of CO₂ in alkali
