What is the net ionic equation for the reaction of NH3 with HNO3?

Ammonia is a weak base and nitric acid is a strong acid.
In a solution;
- A strong acid completely ionizes.
HNO3(aq) -----> H+(aq) + NO3-(aq)

- A weak base cannot ionize completely.
NH3(aq) + H2O(l) ---> NH4+(aq) + OH-(aq)

Answer: E

Although this equation looks similar to the ionization of HCl, the remarkable difference is the shapes of the arrows representing the equations.
-----> represents the complete ionization<----> represents the partial ionization (equilibrium reaction)
The other difference is not visible, but it is a fact that the extent of the ionization cannot exceed 5%. Therefore, OH-(aq) cannot represent a weak base.

Overall: NH3(aq) + HNO3(aq) ----> NH4NO3(aq)
Total ionic:
NH3(aq) + H+(aq) + NO3-(aq) ---> NH4+(aq) + NO3-(aq)
Net ionic:
NH3(aq) + H+(aq) + ---> NH4+(aq)