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
A refiner for a complete denture is contraindicated when 
Select and explain. 
A. There is resorption of the ridge, B. The denture contains a broken tooth, C. Centric occlusion and centric relation do not coincide, D. There is excessive over-closure of the vertical dimension
C: Centric occlusion and centric relation do not coincide
Answer: C: Centric occlusion and centric relation do not coincide 
Explanation: None