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: Microbiology
[{'content': 'The organism most commonly causing genital filariasis in most part of Bihar and eastern U.P. is- \nSelect and explain. \nA. Wuchereria bancrofti, B. Brugia malayi, C. Onchocerca volvulus, D. Dirofilaria', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The nocturnal periodic strains of Wuchereria bancrofti is most wide spread in India.\nMainly along seacoast and riverbanks.\nHeavily infected areas – Uttar Pradesh, Bihar, Andhra Pradesh, Orissa, Tamil Nadu, Kerala and Gujarat', 'role': 'assistant'}]