This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Pentostatin acts by inhibiting \nSelect and explain. \nA. RNA dependent DNA polymerase, B. Aldolase, C. Aldenosine deaminase, D. Adenylyl cyclase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref-Katzung 10/920 Pentostatin and cilastatin are not statins i.e. these do not act by inhibiting HMG-CoA reductase. Pentostatin acts by inhibiting adenosine deaminase. It is used for the treatment of hairy cell leukemia. Drug of choice for hairy cell leukemia is cladribine.', 'role': 'assistant'}]