20. The glycogen-branching enzyme catalyzes:
(A) degradation of (α1 → 4) linkages in glycogen
(B) formation of (α1 → 4) linkages in glycogen.
(C)formation of (α1 → 6) linkages during glycogen synthesis.
(D) glycogen degradation in tree branches.
(E) removal of unneeded glucose residues at the ends of branches.