In what ways do the Fischer projections of D-sorbose and D-idose differ?

D-sorbose is an aldohexose with a ketone group at C1, while D-idose is a ketohexose with an aldehyde group at C2.

D-sorbose and D-idose have completely different OH group arrangements throughout their carbon chains.

D-sorbose is a ketohexose with a ketone group at C2, while D-idose is an aldohexose with an aldehyde group at C1.

D-sorbose and D-idose are identical molecules with different names.