This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Baricitinib was approved by FDA recently for \nSelect and explain. \nA. Osteo ahritis, B. R ahritis, C. Cl difficale, D. Gout', 'role': 'user'}, {'content': 'Answer: B \nExplanation: barcitinib is a janus kinase inhibitoe JAK . Ihibits the activity of JAK 1 and JAK 2 enzymes interfering with JAK STAT pathway.', 'role': 'assistant'}]