This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin tumors, Subject name: Dental
[{'content': 'Epulis is \nSelect and explain. \nA. Benign, B. Malignant, C. Precancerous, D. Reactive Process', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A focal, highly vascular swelling of the gums, a so-called epulis gravidarum, is a pyogenic granuloma that occasionally develops but typically regresses spontaneously after delivery.Reference: William&;s Obstetrics; 24th edition; Chapter 4; Maternal Physiologyy', 'role': 'assistant'}]