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': 'While working with dental material the factor C is\nassociated with \nSelect and explain. \nA. Condensation force, B. Tensile strength, C. Polymerization shrinkage, D. Carving of amalgam', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]