Consider the following complexes

I) ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]}^{+3}$

II) ${\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{+3}$

III) ${\left[\mathrm{Co}{\left(\mathrm{CN}\right)}_6\right]}^{-3}$

the increasing order of wavelength of light absorbed is

• A

  II, I, III

• B

  I, II, III

• C

  III, II, I

• D

  III, I, II