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
Connector's height for ceramic fixed partial dentures is 
Select and explain. 
A. 2 mm, B. 4 mm, C. 6 mm, D. 8 mm
B: 4 mm
Answer: B: 4 mm 
Explanation: None