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
A tooth which is impacted mesioangularly, in class2, position C has a difficulty index of: 
Select and explain. 
A. 2, B. 8, C. 5, D. 6
D: 6
Answer: D: 6 
Explanation: None