This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antibiotics, Subject name: Pharmacology
[{'content': 'The dose of Dapsone at which it does not cause hemolysis? \nSelect and explain. \nA. 50mg, B. 200mg, C. 300mg, D. 500mg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Doses of dapsone less than 50mg in normal healthy persons cause no hemolysis.Ref: Goodman Gillman 12th ed. Pg: 1564', 'role': 'assistant'}]