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: Surgery
During extraction of lower impacted right molar, the bone is removed: 
Select and explain. 
A. To expose maximum dimension of tooth, B. Upto CE junction, C. Upto furcation area, D. Upto half of roots
B: Upto CE junction
Answer: B: Upto CE junction 
Explanation: None