After identifying the first N-terminal residue as glycine, what is the next step in Edman degradation?

• A. Add more aqueous acid to stabilize the peptide.
• B. Isolate the C-terminal residue for further analysis.
• C. Perform another cycle on the remaining peptide to identify the next residue.
• D. Use HPLC to confirm the entire sequence.

Answer: (C)