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: 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: Liver glycogenosis     --->      Type I, Type Ma, Mb, IV, VI, IX.
Muscle glycogenosis       --->        Type II, V, VII.
In Ma & IV muscle weakness and hypotonia are also seen