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: Gynaecology & Obstetrics
The internal rotation in mentoposterior position is : 
Select and explain. 
A. 3/8th of circle, B. 2/8th of circle, C. 1/8th of circle, D. 3/4th of circle
A: 3/8th of circle
Answer: A: 3/8th of circle 
Explanation: 3/8th of circle