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
The Sagittal split mandibular operation 
Select and explain. 
A. is a good operation for closing an anterior open bite., B. Has a very low incidence of inferior dental nerve anaesthesia or paraesthesia with a skilled operator., C. Has a lower morbidity when used for pushing back a mandible than an intra oral vertical subsigmoid osteotomy., D. Rarely leads to a non union of the osteotomy site
D: Rarely leads to a non union of the osteotomy site
Answer: D: Rarely leads to a non union of the osteotomy site 
Explanation: None