Reaction of NaCl with conc. H2SO4 liberates a gas X that turns moist blue litmus paper red. When gas X is passed into a test tube containing egg shell powder suspended in water another gas, Y is generated which when passed through lime water makes it milky. The gases X and Y respectively, are -
(A) HCl and CO2
(B) Cl2 and CO2
(C) SO2 and CO2
(D) SO2 and HCl
