Which ions are present when hydrochloric acid has just neutralised aqueous sodium hydroxide?
- A$\text{Na}^+$, $\text{Cl}^-$, $\text{H}^+$ and $\text{OH}^-$
- B$\text{Na}^+$, $\text{Cl}^-$ and $\text{H}^+$ only
- C$\text{Na}^+$ and $\text{Cl}^-$ only
- D$\text{H}^+$ and $\text{OH}^-$ only