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': 'Water soluble vitamin which is synthesized in body is \nSelect and explain. \nA. Pathothenic acid, B. Vitamin B, C. Vitamin C, D. Vitamin D', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]