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: Dental
[{'content': 'Which of the following is more common in children? \nSelect and explain. \nA. Gingivitis, B. Periodontitis, C. ANUG, D. Pericoronitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Recent recognition that periodontal disease may have its origins in childhood has led dentists to be more aggressive in treatment. Studies confirm a high prevalence of gingival inflammation in children.\nReference: McDONALD AND AVERY’S DENTISTRY for the CHILD and ADOLESCENT, 10th ed page no 243', 'role': 'assistant'}]