This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'Cigar shaped egg is seen in \nSelect and explain. \nA. Culex, B. Aedes, C. Anopheles, D. Mansonia', 'role': 'user'}, {'content': "Answer: A \nExplanation: Description: Eggs laid in groups and cigar shaped. Each raft contains 100-250 eggs Eggs are oval shaped and are not provided with lateral floats. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 831", 'role': 'assistant'}]