$(A)$ Dinitrogen is a diatomic gas which acts like an inert gas at room temperature.
$(B)$ The common oxidation states of these elements are $-3,+3$ and +5 .
$(C)$ Nitrogen has unique ability to form $\mathrm{p} \pi-\mathrm{p} \pi$ multiple bonds.
$(D)$ The stability of +$5$ oxidation states increases down the group.
$(E)$ Nitrogen shows a maximum covalency of $6$.
Choose the correct answer from the options given below.
- A$(A)$, $(B)$, $(D)$ only
- B$(A)$, $(C)$, $(E)$ only
- C$(B)$, $(D)$, $(E)$ only
- ✓$(D)$ and $(E)$ only
