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': 'The commonest type of porosity that results in a fluid resin technique is \nSelect and explain. \nA. Polymerization shrinkage porosity, B. Porosity due to inadequate pressure, C. Air inclusion porosity, D. Porosity due to increased heat', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]