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
Microscopic Endodontics 
Select and explain. 
A. Increases Neck and back Fatigue, B. Does not help in identification of microfactures in teeth, C. Increase Posture of Operator, D. Does not Aid in the Removal of Diseased Dental Tissue
C: Increase Posture of Operator
Answer: C: Increase Posture of Operator 
Explanation: None