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': 'All paicipate in Fatty acid synthesis except \nSelect and explain. \nA. Hydratase, B. Reductase, C. Transacylase, D. Dehydrogenase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Dehydrogenase', 'role': 'assistant'}]