Which of the following represents the structure of -D-xylofuranose?

Step-by-step solution

The open-chain structure of D-xylose, an aldopentose, has its hydroxyl (-OH) groups at C2, C3, and C4 positioned on the right, left, and right sides, respectively, in the Fischer projection. When forming a furanose ring, the C4 -OH group reacts with the aldehyde group at C1. To convert the Fischer projection to a Haworth projection, we follow these rules: 1. Groups on the right side of the Fischer projection point DOWN in the Haworth projection. 2. Groups on the left side point UP. 3. For D-sugars, the terminal - C