What is the difference between the Fischer projections of D-talose and D-idose?

• A. The Fischer projection of D-talose differs from that of D-idose at carbon 2, where the —OH group is on the right in D-talose and on the left in D-idose.
• B. The Fischer projection of D-talose differs from that of D-idose at carbon 3, where the —OH group is on the left in D-talose and on the right in D-idose.
• C. The Fischer projection of D-talose differs from that of D-idose at carbon 4, where the —OH group is on the right in D-talose and on the left in D-idose.
• D. The Fischer projection of D-talose differs from that of D-idose at carbon 5, where the —OH group is on the left in D-talose and on the right in D-idose.

Answer: (B)