Consider $0.10\mathrm{M}$ solutions of three salts: $\mathrm{NaA}$, $\mathrm{BCl}$ and $\mathrm{BA}$, where HA is a weak acid with $K_a=1.0\times 10^{-5}$ and BOH is a weak base with $K_b=1.0\times 10^{-5}$. Use the standard approximations. Which statements are correct?

1. AThe pH of $\mathrm{NaA}$ is 9.00.
2. BThe pH of $\mathrm{BCl}$ is 5.50.
3. CThe solution of $\mathrm{BA}$ is neutral, even though both ions hydrolyse.
4. DThe degree of hydrolysis in $\mathrm{BA}$ is smaller than in $\mathrm{NaA}$.