Given below are two statements: Statement I: The correct order in terms of atomic/ionic radii is $\mathrm{Al}>\mathrm{Mg}>\mathrm{Mg}^{2+}>\mathrm{Al}^{3+}$. Statement II: The correct order in terms of the magnitude of electron gain enthalpy is $\mathrm{Cl}>\mathrm{Br}>\mathrm{S}>\mathrm{O}$. In the light of the above statements, choose the correct answer from the options given below: