Which of the following statements is true for cation exchange chromatography? Separates primarily based on a net negatively charged analyte interacting with positively charged stationary material. Separates primarily based on a net positively charged analyte interacting with negatively charged stationary material. Separates primarily based on size/ shape where smaller analytes elute before larger analytes. None of these are correct. Separates primarily based on size/ shape where larger analytes elute before smaller analytes.