Carbonyl Compounds and Carboxylic Acids — Chemistry STD 12 — Question

Which of the following relation is correct for degree of hydrolysis of ammonium acetate?
$
\begin{aligned}
& h=\sqrt{\frac{ K _{ h }}{ C }} \\
& h =\sqrt{\frac{ K _{ a }}{ K _{ b }}} \\
& h =\sqrt{\frac{ K _{ h }}{ K _{ a } \cdot K _{ b }}} \\
& h =\sqrt{\frac{ K _{ a } \cdot K _{ b }}{ K _{ h }}}
\end{aligned}
$