$\begin{array}{1 1} \text{(a) 1 bonding and 3 non-bonding} \\ \text{(b) 2 bonding and 2 non-bonding} \\ \text{(c) 3 bonding and 1 non-bonding } \\ \text{ (d) 3 bonding and 0 non-bonding} \end{array} $
