This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antimetabolites and Quinolones, Subject name: Pharmacology
[{'content': 'Which of the following drug belongs to antifolate group of antimicrobials? \nSelect and explain. \nA. Erythromycin, B. Doxycycline, C. Pyrimethamine, D. Gentamicin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANTIMICROBIALS INHIBITING METABOLISM a. FOLIC ACID SYNTHASE INHIBITORS i. SULFONAMIDES ii. DAPSONE iii. PAS b. DI HYDRO FOLATE REDUCTASE INHIBITORS i. TRIMETHOPRIM ii. PYRIMETHAMINE', 'role': 'assistant'}]