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': 'Major signs for AIDS case definition according to WHO are -a) Generalized lymphadenopathyb) Prolong fever more than 1 monthc) Prolong cough for > 1 monthd) Chronic diarrhoea > 1 monthe) Weight loss > 10% \nSelect and explain. \nA. abc, B. ade, C. ace, D. abde', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]