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': 'Bull’s eye lesion in the macula is seen with: \nSelect and explain. \nA. Chloroquine, B. Primaquine, C. Quinine, D. Sulfamethoxazole', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bull’s eye maculopathy is the appearance of macula in which circular bands of different shades of pink and orange are visible. It is may be caused by chloroquine and hydroxychloroquine.\nClinically important consideration for drug-melanin binding involves the retinal pigment epithelium. In the retinal pigment\xa0 epithelium,\xa0accumulation\xa0of\xa0chloroquine\xa0causes a toxic retinal lesion known as a “bull’s-eye” maculopathy, which is associated with a decrease in visual acuity.\u200b\nReference: Goodman and Gillman, the Pharmacological basis of Therapeutics 12 ed page no 1780\u200b', 'role': 'assistant'}]