In a biochemical experiment, you identify an oligosaccharide with a free anomeric carbon. What does this indicate about the oligosaccharide's directionality?

• A. The oligosaccharide has a reducing end.
• B. The oligosaccharide has a non-reducing end.
• C. The oligosaccharide is a glycolipid.
• D. The oligosaccharide is homogeneous.

Answer: (A)