According to CFT the energy of ${{\mathrm{t}}_2}_{\mathrm{g}}$ orbitals in an octahedral complex

• A

  decrease by  $\frac{2}{5}{\mathrm{\Delta }}_{\mathrm{o}}$

• B

  increase by $\frac{2}{5}{\mathrm{\Delta }}_{\mathrm{o}}$

• C

  increase by $\frac{3}{5}{\mathrm{\Delta }}_{\mathrm{o}}$

• D

  decrease by $\frac{3}{5}{\mathrm{\Delta }}_{\mathrm{o}}$