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': 'Specific plaque hypothesis was put forward by: \nSelect and explain. \nA. Jenco, B. Listgarten, C. Loesche, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]