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': 'Corkscrew shaped endomentrial glands is seen in: \nSelect and explain. \nA. Early proliferative phase, B. Late proliferative phase, C. Early secretory phase, D. Late secretory phase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Late secretory phase', 'role': 'assistant'}]