When deriving the cyclic structure of D-fructose from its linear form, what is the orientation of the hydroxyl group on the C3 carbon?

• A. The hydroxyl group on the C3 carbon is axial.
• B. The hydroxyl group on the C3 carbon points downwards.
• C. The hydroxyl group on the C3 carbon is equatorial.
• D. The hydroxyl group on the C3 carbon points upwards.

Answer: (D)