Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown by the balanced chemical equation below. What happens to the total mass as the reaction takes place?

AgNO3 + NaCl ---> Agcl + NaNO3
A.The mass increases.
B.The mass decreases.
C.The mass remains constant.
D.The mass first decreases and then increases.

C. The mass remains constant.