Compound $Q$ is a white crystalline substance that is readily soluble in water. On adding concentrated sulfuric acid to a dry sample of $Q$, steamy white fumes are produced which, when bubbled through aqueous silver nitrate solution, give a white precipitate. The precipitate dissolves in dilute ammonia solution. What is the most likely identity of compound $Q$?
- A$\text{AgCl}$
- B$\text{NaBr}$
- C$\text{NaCl}$
- D$\text{PbBr}_2$