This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'Best treatment for Sickle cell anemia is: \nSelect and explain. \nA. Hydroxyurea, B. Sulphonamide, C. Iron Injection, D. Blood transfusion', 'role': 'user'}, {'content': "Answer: A \nExplanation: a. Hydroxyurea(Ref: Nelson's 20/e p 2236-2345', Ghai 8/e p 344-345)Hydroxyurea increases HbF levels and so is used for treatment of sickle cell anemia.", 'role': 'assistant'}]