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': 'Malonate competetively inhibits \nSelect and explain. \nA. Fumarate dehydrogenase, B. Succinate thiokinase, C. Aconitase, D. Succinate dehydrogenase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Succinate dehydrogenase', 'role': 'assistant'}]