This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': 'Amino acid cannot used for glycogen synthesis \nSelect and explain. \nA. Muscle, B. RBCs, C. Brain, D. Kidney', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Question Repeated', 'role': 'assistant'}]