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': 'All of the following are true about Classical dengue fever except - \nSelect and explain. \nA. Case fatality is low, B. Break bone fever, C. Positive tourniquet test, D. It is a self limiting disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Positive tourniquet test is seen in Dengue haemorrhagic fever not in classical dengue fever.It is the most common haemorrhagic phenomenon. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 264', 'role': 'assistant'}]