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': "Palmer's sign is pregnancy refers to (8-12 weeks): \nSelect and explain. \nA. Rhythmic contractions of uterus, B. Pulsations in the lateral fornix, C. Discoloration of vagina, D. None", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rhythmic contractions of uterus', 'role': 'assistant'}]