This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious disease, Subject name: Pediatrics
[{'content': 'According to WHO the major sign of AIDS children in stage I is the following \nSelect and explain. \nA. Generalised lymphadenopathy, B. Not gaining weight, C. Oral candidiasis, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: According to WHO clinical staging of AIDS in children with confirmed infection, the symptoms of clinical stage 1 are patients may be asymptomatic they have persistent generalised lymphadenopathy. Reference : Ghai essential pediatrics, eighth edition, pg no:226', 'role': 'assistant'}]