Which of the following statements correctly differentiates SDS-PAGE from native PAGE?

• A. Native PAGE denatures proteins, while SDS-PAGE retains their native structure.
• B. SDS-PAGE separates proteins based on mass, while native PAGE separates based on charge, shape, and mass.
• C. Both SDS-PAGE and native PAGE separate proteins based on their native charge.
• D. SDS-PAGE separates proteins based on charge, while native PAGE separates based on mass.

Answer: (B)