A saturated suspension of AgCl(s) in water at 25\,°C is stirred while concentrated NH3(aq) is added dropwise. After equilibrium is re-established, what happens to the amount of solid present?
a) The solid dissolves because Ag+ forms a soluble complex with NH3.
b) No change occurs because NH3 is too weak a ligand to disturb the AgCl equilibrium.
c) More solid forms because NH3 supplies additional Cl− ions by generating NH4Cl.
d) The solid dissolves initially but re-precipitates as Ag2O(s) once the solution becomes basic.