This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolic disorders, Subject name: Pediatrics
Which Glycogen Storage Disease doesn&;t affect muscles ? 
Select and explain. 
A. Type 1, B. Type 2, C. Type 3, D. Type 4
A: Type 1
Answer: A: Type 1 
Explanation: Glycogen storage disease type 1 is an inherited disorder caused by the buildup of a complex sugar called glycogen in the body&;s cells . The accumulation of glycogen in ceain organs and tissues , especially the liver, kidneys, and small intestines, impairs their ability to function normally. Reference: GHAI Essential pediatrics, 8th edition