This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Molecular separation of two proteins with same charge can be done by: 
Select and explain. 
A. Ion exchange chromatography, B. Dialysis, C. Gel diffusion chromatography, D. Electrophoresis
C: Gel diffusion chromatography
Answer: C: Gel diffusion chromatography 
Explanation: C i.e. Gel diffusion Chomatography