This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Type II glycogen storage disorder is due to deficiency of: 
Select and explain. 
A. alpha-Glucosidase, B. alpha-galactosidase, C. Muscle phosphorylase, D. Acid Lipase
A: alpha-Glucosidase
Answer: A: alpha-Glucosidase 
Explanation: None