Determine and encircle the chiral carbon atoms (if any) in the following structure. What determines their chirality?

• A. The chirality is determined by the presence of four distinct groups attached to the chiral carbon atom.
• B. The chirality is determined by the presence of a double bond between the oxygen atom and the chiral carbon atom.
• C. The chirality is determined by the presence of an ester linkage between the oxygen atom and the chiral carbon atom.
• D. There is no chiral carbon atom in the given structure. The chirality is determined by the presence of an amino group (-NH₂) attached to the chiral carbon atom.

Answer: (A)