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': 'Which of the following statement (s) is/are true about dengue fever -a) ↑ Hematocritb) ↓Plateletc) Positive tourniquet testd) Vector (Aedes aegypticus) usually bites in day time \nSelect and explain. \nA. abc, B. acd, C. bcd, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]