What is the primary difference between size exclusion chromatography and gel electrophoresis in terms of molecular movement?

• A. Both techniques allow smaller molecules to move faster through the gel.
• B. In size exclusion chromatography, larger molecules elute faster, while in gel electrophoresis, smaller molecules move faster.
• C. Both techniques allow larger molecules to move faster through the gel.
• D. In size exclusion chromatography, smaller molecules elute faster, while in gel electrophoresis, larger molecules move faster.

Answer: (B)