This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Carbohydrate Metabolism, Subject name: Pediatrics
[{'content': 'Hers disease is due to deficiency of: \nSelect and explain. \nA. Liver phosphorylase, B. Muscle phosphorylase, C. Branching enzyme, D. RBC phosphofructokinase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hers disease:due to deficiency of liver phosphorylase benign course and present with hepatomegaly and growth retardation in early childhood; Hypoglycemia, hyperlipidemia, and hyperketosis of variable severity are seen.', 'role': 'assistant'}]