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': 'Pentostatin inhibits \nSelect and explain. \nA. Dihydrofolate reductose, B. Adenosine deaminase, C. Thymidylate synthase, D. Uridylate synthose', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pentostatin is a purine analogue that inhibits Adenosine deaminase. It is used in cases of Hairy cell leukemia (Doc: Uadiribine).', 'role': 'assistant'}]