This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'Which of the following drug is deposited in the retina? \nSelect and explain. \nA. Isoninazid, B. Chloroquine, C. Rifampicin, D. Pyrizinamide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Prolonged use of high doses (as needed for rheumatoid ahritis, DLE, etc.) may cause loss of vision due to retinal damage. Corneal deposits may also occur and affect vision, but are reversible on discontinuation. ESSENTIALS OF PHARMACOLOGY page no. 823', 'role': 'assistant'}]