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
[{'content': 'which fetal presentation vaginal delivery can be expected? \nSelect and explain. \nA. Face presentation when the chin lies direct to the sacrum, B. Brow presentation, C. Shoulder presentation, D. Face presentation when the chin lies under the symphysis pubis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: If there is no dispropoion and the position is mentoanterior labour can be allowed to progress.The majority deliver spontaneously although labour may take slightly longer .(refer pgno:373 sheila textbook of obstetrics 2 nd edition)', 'role': 'assistant'}]