In This Reaction,the Symbol (Aq)after ZnBr₂ Means That It Is $\rightarrow$

In this reaction,the symbol (aq) after ZnBr₂ means that it is: ZnBr₂ (aq) + K₂CO₃ (aq) $\rightarrow$ 2 KBr (aq) + ZnCO₃ (s)

A) the excess reagent.
B) an ionic compound.
C) a reactant.
D) dissolved in water.