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: Pharmacology
[{'content': 'Trimethoprim acts by- \nSelect and explain. \nA. Inhibiting DHFR, B. Inhibiting protein, C. Inhibiting cell wall, D. Inhibiting cell membrance', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' i.e., Inhibiting DHFR", 'role': 'assistant'}]