This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormal labor, Subject name: Gynaecology & Obstetrics
In an after coming head the following bone Is perforated during craniotomy: 
Select and explain. 
A. Occiput, B. Parietal, C. Palate, D. Frontal
A: Occiput
Answer: A: Occiput 
Explanation: Craniotomy : Consists of perforating the fetal skull, evacuating the contents and then delivering rest of the fetal pas. Indications : Delivery of dead fetus in obstructed labour with a cephalic presentation Delivery of the arrested after coming head in vaginal breech delivery Hydrocephalus Ref: Dutta Obs 9e pg 544.