Which of the following is/are correct about the solubility?

Options

A. Solubility of `CaF_(2)` is more in buffer solution of pH =3 than in pure water
B. Solubility of ZnS in water depends upon the pH of solution
C. Solubility of AgCl increases in the presence of sodium thiosulphate
D. Solubility of ZnS in the presence of `H^(+)` ion can be derived by K = `([Zn^(2+][H_(2) S])/([H^(+)]^(2)) ` where K is equilibrium constant for the reaction, `ZnS_((s)) + 2H_((aq))^(+) hArr Zn_(aq)^(2+) + H_(2) S_((aq)) `

Answer

A, B, C, D