This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin lesions and disorders of pigmentation, Subject name: Dental
[{'content': 'Erythema marginatum is seen in \nSelect and explain. \nA. Enteric fever, B. Rheumatic fever, C. Drug reaction, D. Typhoid fever', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The classic rash of Acute rheumatic fever is erythema marginatum, which begins as pink macules that clear centrally, leaving a serpiginous, spreading edge. Harrison 19e pg: 2152', 'role': 'assistant'}]