Identify the correct chemical reaction involved in bleaching powder preparation?
ANaCl + H2O + CO2 + NH3 NH4Cl + NaHCO3
B2 NaCl (aq) + 2 H2O (1)→2 NaOH (aq) + Cl2 (g) + H2 (g)
CCa(OH)2 + Cl2→ CaOCl2+H2O
DNaHCO3 + H+ CO2 + H2O + Sodium s ) + Cl2(g) + H2 (g) Sodium salt of acid