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': 'At distal end of mandibular arch pear shaped structure which is composed of typical gingival tissue known as? \nSelect and explain. \nA. Retromolar pad, B. Retromolar papilla, C. Pterygomandibular raphe, D. Masseteric notch', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Retromoplar papilla:\n\nIt is an scar/remnants of gingival tissue of last mandibular molar extraction\n\nRetromolar Pad:\n\nTriangular pad of soft tissue at distal end of lower ridge.', 'role': 'assistant'}]