This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis of Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Hegar sign is seen earliest at: \nSelect and explain. \nA. 8 weeks, B. 12 week, C. 14 week, D. 15 week', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) 8 weeksRef. D. C Dutta 7th Ed. /65The pelvic changes during pregnancy are divers and appear different at different periods:SignsAt AOGPalmer's sign: Regular and rhythmic uterine contraction4-8 weeksVaginal sign: softened vaginal wall with copious mucoid discharge6th weekGoodell's sign: cervix feels soft and congested6th weekHegar's sign: uterus is enlarged and soft; cervix empty.6-10 weeksOsiander sign: increased pulsation at lateral fornices8th weekChadwick's sign or Jacquemier's sign: dusky hue of the vestibule and anterior vaginal wall (due to local vascular congestion)8th weekPiskacek's sign: asymmetrical enlargement of the uterus if there is lateral implantation12th week", 'role': 'assistant'}]