Given below are two statements : Statement (\(\mathbf{I}\)): The radii of isoelectronic species increases in the order. \(\mathrm{Mg}^{2+} \lt \mathrm{Na}^{+} \lt \mathrm{F}^{-} \lt \mathrm{O}^{2-}\) Statement (II): The magnitude of electron gain enthalpy of halogen decreases in the order. \(\mathrm{Cl}\gt\mathrm{F}\gt\mathrm{Br}\gt\mathrm{I}\) In the light of the above statements, choose the most appropriate answer from the options given below :

• A

  Statement I is incorrect but Statement II is correct
• B

  Statement I is correct but Statement II is incorrect
• C

  Both Statement I and Statement II are incorrect
• Correct answer
  D

  Both Statement I and Statement II are correct

Hence, the correct answer is option: 'D'.