A Titanium(III) Complex (With a D¹ Electron Configuration) Absorbs Light

A titanium(III) complex (with a d¹ electron configuration) absorbs light at 480 nm. What is D , the crystal field splitting in this complex, expressed in kJ/mol?

A) 1.38×10 ^{- 27}
B) 4.14×10 ^{- 19}
C) 250
D) 2.50×10⁵
E) none of these