What is partial hydrolysis in the context of peptide sequencing?

• A. It is the process of separating peptides based on their charge.
• B. It is the process of completely breaking down a peptide into individual amino acids.
• C. It involves the enzymatic digestion of peptides at the N-terminus.
• D. It selectively cleaves some peptide bonds, allowing for analysis of specific sequences.

Answer: (D)