This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fungal infections, Scabies, Pediculosis, Subject name: Dental
[{'content': 'Exanthens are caused by all except - \nSelect and explain. \nA. Malaria, B. Typhoid, C. Measles, D. Rubella', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Exanthems are caused by all except malaria.', 'role': 'assistant'}]