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 true regarding pulp component of PUFA? \nSelect and explain. \nA. Detected without use of probe, B. Pus drainage with swelling, C. Sinus tract detected with pain, D. Ulceration with pulp involvement', 'role': 'user'}, {'content': 'Answer: A \nExplanation: PUFA index by Monse et al (2010)\nThe PUFA index records the presence of severely decayed teeth with:\n\nVisible pulpal involvement - (P/p)\nUlceration caused by dislocated tooth fragments - (U/u)\nFistula - (F/f)\xa0\xa0\nAbscess - (A/a).\n\nPediatric Dentistry Principles and Practice\nM.S.Muthu', 'role': 'assistant'}]