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
Rough and Irregular surface produced on the impression is because of? 
Select and explain. 
A. Improper application of pressure during impression making, B. Air incorporated during mixing, C. Too rapid polymerization, D. Presence of moisture in impression area
C: Too rapid polymerization
Answer: C: Too rapid polymerization 
Explanation: None