This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'The vector of Dengue fever is - \nSelect and explain. \nA. Aedes aegypti, B. Aedes albopictus, C. Aedes polynesiensis, D. Aedes scutellaris', 'role': 'user'}, {'content': "Answer: A \nExplanation: Aedes aegypti is the vector for dengue fever. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21ST EDITION. PAGE NO - 225", 'role': 'assistant'}]