What is the key structural difference between ribose and deoxyribose?

• A. Deoxyribose has a nitrogenous base attached to the 2' carbon.
• B. Deoxyribose has an extra carbon compared to ribose.
• C. Ribose has a hydroxyl group on the 2' carbon, while deoxyribose does not.
• D. Ribose lacks a phosphate group that deoxyribose has.

Answer: (C)