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': 'Agar syringe material can be used with/as: \nSelect and explain. \nA. Agar, B. Alginate impression material, C. Both of the above, D. Primary impression', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]