Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy? (AIPMT 2010)

The hydration enthalpy of alkaline earth metal sulphates and carbonates decreases down the group as the size of cation increases and lattice enthalpy remains almost constant. Hence,has higher hydration enthalpy than the lattice enthalpy. Therefore, Beryllium sulphate has a maximum solubility than other alkali earth metal sulphates.