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
The commonest type of porosity that results in a fluid resin technique is 
Select and explain. 
A. Polymerization shrinkage porosity, B. Porosity due to inadequate pressure, C. Air inclusion porosity, D. Porosity due to increased heat
C: Air inclusion porosity
Answer: C: Air inclusion porosity 
Explanation: None