Which of the statements below is false?

a. In high spin complexes, the crystal field splitting energy is small.

b. In low spin complexes, electrons are concentrated in the lower energy orbitals.

c. Low spin complexes contain the minimum number of unpaired orbitals.

d. Transition metal complexes are often colored, due to 4s to 3d electronic transitions.

e. The crystal field splitting energy of a metal complex can sometimes be determined from the absorption spectrum.