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': 'Drugs that carry definitive risk of clinical hemolysis in patients with G 6 PD deficiency are all except? \nSelect and explain. \nA. Primaquine, B. Chloroquine, C. Dapsone, D. Nalidixic acid', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chloroquine", 'role': 'assistant'}]