Which of the Following Best Describes the Function of the Glycogen

Which of the following best describes the function of the glycogen debranching enzyme in glycogenolysis?

A) It cleaves $\alpha$ (1 $\rarr$ 6) branch points releasing glucose-6-phosphate.
B) It cleaves $\alpha$ (1 $\rarr$ 6) branch points releasing glucose-1-phosphate.
C) It cleaves $\alpha$ (1 $\rarr$ 6) branch points releasing glucose.
D) It transfers an $\alpha$ (1 $\rarr$ 4) linked trisaccharide unit to the nonreducing end of an alternate branch, then cleaves the $\alpha$ (1 $\rarr$ 6) branch point, releasing glucose-1-phosphate.
E) It transfers an $\alpha$ (1 $\rarr$ 4) linked trisaccharide to the nonreducing end of an alternate branch, then cleaves the $\alpha$ (1 $\rarr$ 6) branch point, releasing glucose.