Consider the following statements about the given disaccharide: I. Both rings are in the pyranose form. II. It is a reducing sugar. III. It is a non-reducing sugar. Choose the correct option:

Step-by-step solution

Based on the given structure of the disaccharide: 1. Both rings are six-membered rings containing one oxygen atom. This indicates that both monosaccharide units are in the pyranose form. Therefore, statement I is correct. 2. The rightmost ring has a free hydroxyl ( -OH ) group at its anomeric carbon (C1). This means it contains a hemiacetal group, which can open up in an aqueous solution to form a free aldehyde group. Because of this, the disaccharide can act as a reducing agent and is classified as a reducing suga