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': 'Vertical compaction of warm gutta-percha technique\nwas given by? \nSelect and explain. \nA. Grossman, B. Ingle, C. Schilder, D. Cohen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]