The Raschig Process Involves the Reaction Between Ammonia and the Hypochlorite

The Raschig process involves the reaction between ammonia and the hypochlorite ion to form hydrazine, which has been used as a rocket fuel.

2 NH₃(aq) + OCl^-(aq) $\rightarrow$ H₂NNH₂(g) + Cl^-(aq) +H₂O(l)
There are isolated cases of individuals making hydrazine unexpectedly in their homes when cleaning a commode. They start with a cleaner that contains ammonia, and then, when this doesn't work, they mix it with a cleaner (such as Chlorox) that contains the hypochlorite ion. How many pairs of nonbonding electrons can be found on each nitrogen atom in the hydrazine molecule? (Note: Assume that there is a bond between the two nitrogen atoms in hydrazine.)

A) 0
B) 1
C) 2
D) 3
E) The two N atoms contain a different number of nonbonding electrons.