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
Which of the following drug belongs to antifolate group of antimicrobials? 
Select and explain. 
A. Erythromycin, B. Doxycycline, C. Pyrimethamine, D. Gentamicin
C: Pyrimethamine
Answer: C: Pyrimethamine 
Explanation: ANTIMICROBIALS INHIBITING METABOLISM a. FOLIC ACID SYNTHASE INHIBITORS i. SULFONAMIDES ii. DAPSONE iii. PAS b. DI HYDRO FOLATE REDUCTASE INHIBITORS i. TRIMETHOPRIM ii. PYRIMETHAMINE