In parallel beta sheets, how do hydrogen bonds link residues on opposite strands?

• A. Each hydrogen bond from a residue links to two different residues on the opposite strand.
• B. Hydrogen bonds link residues on the same strand in parallel beta sheets.
• C. Hydrogen bonds do not link residues on opposite strands in parallel beta sheets.
• D. Both hydrogen bonds from a residue link to a single residue on the opposite strand.

Answer: (A)