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': 'Dose of methotrexate for treatment of rheumatoid ahritis is ? \nSelect and explain. \nA. 7.5 - 15 mg/ week, B. 2.5 - 5 mg/ week, C. 7.5 - 15 mg/ month, D. 2.5 - 5 mg/ month', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a' i.e., 7.5 - 15 mg/ weekMethotrexate (Mtx) for rheumatoid ahritis:Induction of oral low-dose (7.5-15 mg) weekly Mk regimen has improved acceptability of this drug in RA.", 'role': 'assistant'}]