The correct set of four quantum number for the valence electron of rubidium atom $(Z=37)$ is :

Question

$\begin{array}{1 1} (a)\;5,1,1,+1/2 \\ (b)\;6,0,0,+1/2 \\ (c)\;5,0,0,+1/2 \\ (d)\;5,1,0,+1\end{array} $