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: Unknown
[{'content': 'Which of the following is not a component of coenzyme A - \nSelect and explain. \nA. Pantothenic acid, B. Adenylic acid, C. Sulfhydryl group, D. Acetic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans-D', 'role': 'assistant'}]