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 of the following is precursor of CoA \nSelect and explain. \nA. Thiamine, B. Cobalamine, C. Pantothenate, D. Pyridoxamine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: CoA is involved in acetylation reactions. Patothenic acid / Pantothenate (Vitamin B5) is precursor of CoA.', 'role': 'assistant'}]