Which of the following statements about saccharides is true (select all that apply)?
a. The anomeric carbon is formed from the carbonyl carbon that exists in the linear form
b. To form crosslinks, a saccharide needs two anomeric carbons
c. Whether a polysaccharides has α-linkages or β-linkages does not affect the resulting 3-D structure
d. Disaccharides without a free anomeric carbon also lack a reducing end
