The following separation technique depends on the molecular size of the protein :: (A) Chromatography on a carboxymethyl (CM) cellulose column, (B) Iso-electric focussing, (C) Gel filtration chromatography, (D) Chromatography on a diethylaminoethyl (DEAE) cellulose column
Answer is C. C i.e. Gel filtration Chromatography