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
C-factor is associated with? 
Select and explain. 
A. Condensing force for amalgam, B. Cavity preparation factor for amalgam, C. Root curvature, D. Polymerisation shrinkage in composite
D: Polymerisation shrinkage in composite
Answer: D: Polymerisation shrinkage in composite 
Explanation: None