Which statement about k' (capacity factor) is true?

Which statement about k' (capacity factor) is true?

• A. It depends on retention time and dead time and indicates how strongly the analyte is retained on the column.
• B. It is equal to the ratio of mobile phase flow rate to the dwell volume.
• C. It represents the peak width at baseline.
• D. It is independent of the mobile phase composition.

Answer: (A)