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
In face presentation, outlet forceps delivery can be accomplished successfully in all of the following positions except : 
Select and explain. 
A. Right mento-anterior, B. Persistent mento-posterior, C. Direct anterior, D. All
B: Persistent mento-posterior
Answer: B: Persistent mento-posterior 
Explanation: Ans:B.)Persistent mento-posterior