A white sodium salt dissolves readily in water to give a solution neutral to litmus. A silver nitrate solution is added to the above solution white ppt is formed which does not dissolve in dil. nitric acid. The anion is

A

$$\text{SO}_4^{2-}$$

B

$$\text{CO}_3^{2-}$$

C

$$\text{Cl}^-$$

D

$$\text{S}^{2-}$$