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: Anatomy
[{'content': 'In an after coming head the following bone is perforated during craniotomy : \nSelect and explain. \nA. Occiput, B. Parietal, C. Palate, D. Frontal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Craniotomy : It 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: Datta Obs 9e pg 544.', 'role': 'assistant'}]