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
[{'content': 'Which vitamin is necessary for coenzyme A synthesis \nSelect and explain. \nA. Pantothenic acid, B. Ascorbic acid, C. Biotin, D. Pyridoxine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pantothenic acid is required for CoA and acyl carrier protein.', 'role': 'assistant'}]