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': 'A commonest side effect of Dapsone is : \nSelect and explain. \nA. Hemolytic anemia, B. Thrombocytopenia, C. Cyanosis, D. Bone marrow depression', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hemolysis develops in almost every individual treated with 200-300 mg dapsone per day. Doses of less than 100 mg in healthy persons and less than 50 mg per day in persons with G-6PD deficiency do not cause hemolysis. Methemoglobinemia is also very common.', 'role': 'assistant'}]