What is the role of salt in the elution of negatively charged proteins during anion-exchange chromatography?

• A. Salt neutralizes the charge of proteins, allowing them to elute without binding.
• B. Salt decreases the strength of ionic interactions, allowing negatively charged proteins to elute faster.
• C. Salt increases the strength of ionic interactions, causing negatively charged proteins to bind more strongly.
• D. Salt has no effect on the elution of negatively charged proteins.

Answer: (B)