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: Social & Preventive Medicine
[{'content': 'The organism most commonly causing genital filariasis in most pa of Bihar and easteran U.P. is - \nSelect and explain. \nA. Wuchereria bancrofti, B. Brugia malayi, C. Onchocerca volvulus, D. Dirofilaria', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Wuchereria bancrofti W. bancrafti is the most widely distributed human filarial parasite.", 'role': 'assistant'}]