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': 'Dentin bonding agents usually contain \nSelect and explain. \nA. Only hydrophobic component, B. Only hydrophilic component, C. Hydrophobic and hydrophilic component, D. lyophilic and lyophobic component', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]