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
Antifolate cancer drug are - 
Select and explain. 
A. Methotrexate, B. Azathioprine, C. Cycl osporin, D. Vincristine
A: Methotrexate
Answer: A: Methotrexate 
Explanation: Ans. is 'a' i.e., Methotrexate o Folate antagonists which are used as anticancer cancer drugs :- (i) Methotrexate; (ii) Premetrexate