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
Amount of volumetric polymerization shrinkage seen in composites during curing is: 
Select and explain. 
A. 0.5-2%, B. 1.7-5.7%, C. 5.2-9.8%, D. 12.8-17.76%
B: 1.7-5.7%
Answer: B: 1.7-5.7% 
Explanation: Linear shrinkage is about 0.2 to 2%.
Volumetric shrinkage is 1.7-5.7%.
Shrinkage is seen towards the centre in self cure materials and towards the light source in light cure materials. 
Reference : Nisha Garg 2ND ed Pg: 310