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': 'The groove separating the gum pad from the palate is  called \nSelect and explain. \nA. Gingival groove, B. Dental groove, C. Lateral sulcus, D. Transverse groove', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]