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: Medicine
[{'content': 'NS-1 in dengue, stands for? \nSelect and explain. \nA. Non-specific, B. Non-significant, C. Non- structural, D. Non stranded', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]