The correct option is A NH4HCO3,NaHCO3
Ammonium chloride reacts with sodium hydroxide to form sodium chloride, ammonia and water.
NH4Cl+NaOHHeat−−−→NaCl+NH3+H2O(A)
Ammonia reacts with carbon dioxide and water to form ammonium bicarbonate.
NH3+CO2+H2O→NH4HCO3(B)
Ammonium carbonate reacts with sodium chloride to form sodium bicarbonate and ammonium chloride.
NH4HCO3+NaCl→NaHCO3+NH4Cl(B)(C)
Sodium bicarbonate decomposes to give sodium carbonate, water and carbon dioxide.
2NaHCO3→Na2CO3+H2O+CO2(C)(D)