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
[{'content': 'All of the following are TRUE regarding engagement of the head, EXCEPT: \nSelect and explain. \nA. One fifth of the head may be palpable per abdomen, B. The veex will be at the level of ischial spine, C. The biparietal diameter has passed through the pelvic inlet, D. Two-fifth of the head may be palpable per abdomen', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The diameter of engagement is the diameter of pelvic inlet in which head engages. Once engagement occurs, the veex will be at the level of ischial spine and on abdominal palpation, either no pa or only one-fifth of the head will be palpable. Ref: Textbook of Obstetrics Sheila Balakrishnan 1st Ed, page 125-126', 'role': 'assistant'}]