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: Pathology
[{'content': 'A patient with the complaint of sore throat, dysphagia, and ulcers over the palate since 1 week, comes to OPD. On examination, you found vesicles over the soft palate and tonsillar pillar. The\xa0ulcers have\xa0a gray base and inﬂamed periphery. What could be the possible diagnosis? \nSelect and explain. \nA. Herpangina, B. Pharyngitis, C. Chickenpox, D. Primary herpetic gingivostomatitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Differential Diagnosis\n\nTonsillitis / pharyngitis : No vesicles / ulcers, purulent exudate, culture.\nChickenpox : Skin lesions\nPrimary herpetic gingivostomatitis : Generalised acute marginal gingivitis, not epidemic, in anterior part of oral cavity.', 'role': 'assistant'}]