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
In processing methyl methacrylate, the resin may show porosity if the flask is placed too soon. Porosity most likely occur 
Select and explain. 
A. Throughout the denture, B. Near the borders, C. In the thickest part, D. On the denture surface
C: In the thickest part
Answer: C: In the thickest part 
Explanation: None