Gidentify the true statements regarding α-1,6 linkages in glycogen. at least four glucose residues separate α‑1,6 linkages. the number of sites for enzyme action on a glycogen molecule is increased through α‑1,6 linkages. new α‑1,6 linkages can only form if the branch has a free reducing end. the reaction that forms α-1,6 linkages is catalyzed by a branching enzyme. exactly four residues extend from these linkages.