The correct option is B False
The solubility of some solids in water increase with the increase in temperature.
This is true for those solids which have endothermic dissolution.
The solubility of some solids in water decrease with increase in temperature. This is true for those solids which have exothermic dissolution.
For example dissolution of NaOH in water is exothermic. When the temperature is raised, the solubility of NaOH in water decreases.