Compound \(X\) is tested and the results are shown in the table.
\(\begin{array}{l|l}\hline \text{ Test } & \text{ Result } \\\hline \text{ Aqueous sodium } & \text{ Gas given off which turns }\\\text{ hydroxide is added, }& \text{ damp red litmus paper }\\\text{ then heated gently. }& \text{ blue. }\\\text{ Dilute hydrochioric }& \text{ Effervescence, gas given }\\\text{ acid is added. }& \text{ off which turns lime water }\\& \text{ milky and acidified }\\& \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \text{ paper green. }\\\hline\end{array}\)
Which ions are present in compound \(X ?\)

1. A Ammonium ions and sulphite ions
2. B Ammonium ions and carbonate ions
3. C Sodium ions and carbonate ions
4. D Ammonium ions and sulphate ions