This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'In culex mosquito the type of biological transmission for filarial parasite is - \nSelect and explain. \nA. Cyclo-developmental, B. Cyclo-propagative, C. Propagative, D. Cyclical', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The following stages of development takes place in the vector Exsheathing First stage larva Second stage larva Third stage larva (Refer pgno:271 park 23rd edition)', 'role': 'assistant'}]