Monosaccharides can be classified based on the number of carbons they contain and the type of group attached to the molecule. select all the monosaccharides that are correctly paired with their class. fructose : hexose ketose erythrose : tetrose ketose ribose : hexose aldose dihydroxyacetone : triose ketose glyceraldehyde : triose aldose erythrulose : tetrose aldose epimers are monosaccharide diastereoisomers that have a single asymmetric carbon. anomers are diastereoisomers in which the hemiacetal carbon of a cyclic monosaccharide is asymmetric. determine whether each pair of monosaccharides consists of epimers, anomers, or an aldose‑ketose pair. epimers anomers aldose‑ketose pair