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 case of unstable lie of fetus, the placenta is usually : \nSelect and explain. \nA. Cornual, B. Lateral wall, C. Fundus, D. Placenta in lower segment', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Unstable lie is seen in placenta pre. Other conditions include : Multipara Hydramnios Contracted pelvis Pelvic tumor Ref: Datta Obs 9e pg 372.', 'role': 'assistant'}]