This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Infections, Subject name: Social & Preventive Medicine
[{'content': 'True about Measles rash appearance: \nSelect and explain. \nA. Along with Koplik spots, B. 1-2 days before Koplik spots, C. 1-2 days after Koplik spots, D. Post measles stage', 'role': 'user'}, {'content': 'Answer: C \nExplanation: RASH IN MEASLES Stas 12-24 hours after appearance of Koplik spots. Retro -auricular origin spreads to other pas of body (fades in opposite direction). Takes 1 - 2 days to cover body * Fever is highest and patient is sickest on day of rash.', 'role': 'assistant'}]