This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
[{'content': 'Common dose dependant side effects of Ethambutol is \nSelect and explain. \nA. Red-urine, B. Loss of visual acuity, C. Nephropathy, D. Peripheral neuropathy', 'role': 'user'}, {'content': "Answer: B \nExplanation: (Loss of visual acuity) (701-KDT) (742-43-KDT 6th)ETHAMBUTOL - It is distributed widely but penetrates meninges incompletely and is temporarily stored in RBC's* * Loss of visual acuity/ colour vision, field defects due to optic neuritis is the most important dose and duration of therapy dependent toxicity.* It should not be used below 6 years of age.* * Hyperuricemia is due to interference with urate excretion.", 'role': 'assistant'}]