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$\begin{tabular}{|c|c|} \hline $\chi$ & $\rho(\chi)$ \\ \hline $-2$ & $5$ \\ \hline $-1$ & $0$ \\ \hline $0$ & $-3$ \\ \hline $1$ & $-1$ \\ \hline $2$ & $0$ \\ \hline \end{tabular}$ The table above gives selected values of a polynomial function $\rho$. Based on the values in the table, which of the following must be a factor of $\rho$ ?