What is/are correct statement (s)?

Options

A. `CH_(3)COONH_(4)` have greater degree of hydrolysis in 0.2 M solution in comparision os 0.4 M solution.
B. Ahnions which are weaker base than `OH^(-),` do not hydrolyse
C. The `CH_(3)COO^(-),` have greater of hydrolysis in comparision of `HCOO^(-)` when their salt solution have equal conc.
D. `SO_(4)^(2-)` hydrolyses but `HSO_(4)^(-)` does not undergo hydrolysis