JEE Main 2020 Chemistry question

The correct order of the spin-only magnetic moments of the following complexes is : (I) (II) (III) () (IV)

• (A)(I) > (IV) > (III) > (II)Correct
• (B)(II) ≈ (I) > (IV) > (III)
• (C)(III) > (I) > (IV) > (II)
• (D)(III) > (I) > (II) > (IV)