Sample M contains calcium carbonate and sodium nitrate. The result of adding water to M , stirring and filtering is shown. No chemical reaction occurs. Which terms describe $$\(M\)$$, calcium carbonate and aqueous sodium nitrate?

\begin{tabular}{|c|c|c|c|}
\hline & sample M & \begin{tabular}{c}
calcium \\
carbonate
\end{tabular} & \begin{tabular}{c}
aqueous \\
sodium nitrate
\end{tabular} \\
\hline A & compound & filtrate & residue \\
B & compound & residue & filtrate \\
C & mixture & filtrate & residue \\
D & mixture & residue & filtrate \\
\hline
\end{tabular}