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
Pyroplastic flow of porcelain is due to: 
Select and explain. 
A. High temperature during glazing, B. Low temperature during glazing, C. Improper condensation, D. High firing temperature
A: High temperature during glazing
Answer: A: High temperature during glazing 
Explanation: None