\begin{table}
\caption{\label{tab:transform2}Transformation properties for the transformation
$\widetilde{x}=-x$, $\widetilde{y}=-y$, and $\widetilde{z}=z$.}
%\centering
\par
\begin{tabular}{c c c}
\hline \hline 
Quantity  & Set a) & Set b) \\
\hline
$\rho$, $p$, $\eta$ & (s) & (s) \\
$u_{x}$, $u_{y}$    & (a) & (a) \\
$u_{z}$             & (s) & (s) \\
$B_{x}$, $B_{y}$    & (s) & (a) \\
$B_{z}$             & (a) & (s) \\
$j_{x}$, $j_{y}$    & (s) & (a) \\
$j_{z}$             & (a) & (s) \\
\hline
\end{tabular}
\end{table}