In a test tube containing a salt,a few drops of dilute $\text{H}_2\text{SO}_4$ were added,which gave colourless vapours having the smell of vinegar. The vapours turned the blue litmus paper red. Identify the correct anion from the following:
- ACarbonate,$\text{CO}_3^{2-}$
- BSulphide,$\text{S}^{2-}$
- CAcetate,$\text{CH}_3\text{COO}^-$
- DSulphate,$\text{SO}_4^{2-}$
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