Which Cation in Each Set Is Expected to Have the Larger

Multiple Choice

Which cation in each set is expected to have the larger (more negative) hydration energy? I Be²⁺ or Ca²⁺
II Rb⁺ or Zn²⁺

A) Be²⁺ in set I and Rb⁺ in set II
B) Be²⁺ in set I and Zn²⁺ in set II
C) Ca²⁺ in set I and Rb⁺ in set II
D) Ca²⁺ in set I and Zn²⁺ in set II