Using the 'up-lefting' and 'down-right' method, convert the Fischer projection of D-glucose into its Haworth projection. What is the orientation of the hydroxyl group on the C3 carbon in the cyclic form?

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

Answer: (C)