The color of ammonium chloride is: 

The chemical formula of ammonium chloride is ${\mathrm{NH}}_4\mathrm{Cl}$. It is a crystalline solid. It is a salt and it is found to be in a white powder.

Ammonium chloride is produced as a byproduct of the ammonia-soda process used to produce sodium carbonate. It is also created through the reaction of ammonium sulfate and sodium chloride solutions. If combined with slaked lime (calcium carbonate),

Hence option (B) is correct.