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
Saddleback/ biphasic fever is seen in: September 2004 
Select and explain. 
A. Typhoid, B. Dengue, C. Brucellosis, D. Trench fever
B: Dengue
Answer: B: Dengue 
Explanation: Ans. B i.e. Dengue