Which of the of the following statements in not correct?

The solubility of a sparingly soluble salt in water decreases if some common ion is present in water

The solubility product of a salt is dependant on temperature

The solubility of $\mathrm{PbS}$ in water as computed from solubility product is not affected if the hydrolysis of ${\mathrm{Pb}}^{2+} \mathrm{and} {\mathrm{S}}^{2-}$ are also considered

The solubility of$\mathrm{Zn}{\left(\mathrm{OH}\right)}_2$ in water is dependant on the pH of the solution