This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Anatomy
Cesarean section is mandatory in following presentation 
Select and explain. 
A. Cephalic, B. Veex, C. Face, D. Brow
D: Brow
Answer: D: Brow 
Explanation: In brow presentation, the engaging diameter is Mentoveical diameter which is 14 cms that cannot pass through cervix Hence,cesarean section is mandatory. Ref: Datta Obs 9e pg 368.