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': 'FK-506 is used in - \nSelect and explain. \nA. Organ transplant, B. Bronchial asthama, C. Diabetic diarroea, D. Chemotherapecutic agent', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Organ transplant Fk - 506 is tacrolimus.", 'role': 'assistant'}]