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The correct order of the complexes [Co(NH 3 ) 5 (H 2 O)] 3+ (A), [Co(NH 3 ) 6 ] 3+ (B), [Co( CN) 6 ] 3 – (C) and [CoCl(NH 3 ) 5 ] 2+ (D) in terms of wavelength of light absorbed is

1. C > B > A > D
2. D > C > B > A
3. C > B > D > A
4. D > A > B > C

Correct answer: D > A > B > C

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