What distinguishes N-linked glycosylation from O-linked glycosylation?

• A. N-linked glycosylation involves attachment to DNA, while O-linked involves attachment to RNA.
• B. N-linked glycosylation involves attachment to nitrogen, while O-linked involves attachment to oxygen.
• C. N-linked glycosylation involves attachment to lipids, while O-linked involves attachment to proteins.
• D. N-linked glycosylation involves attachment to oxygen, while O-linked involves attachment to nitrogen.

Answer: (B)