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': 'Rough and Irregular surface produced on the impression is because of? \nSelect and explain. \nA. Improper application of pressure during impression making, B. Air incorporated during mixing, C. Too rapid polymerization, D. Presence of moisture in impression area', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]