This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Physiological changes during Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'The clotting factor which is not increased in pregnancy: \nSelect and explain. \nA. Factor 2, B. Factor 7, C. Factor 10, D. Factor 11', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d, i.e. Factor 11Ref: Dutta Obs 9/e, p 48Pregnancy is a hypercoaguable state, all clotting factors increase in pregnancy except factor 11 and 13. Another frequently asked question is what happens to fibrinogen levels during pregnancy-since fibrinogen is clotting factor number 1 therefore it also increase in pregnancy.', 'role': 'assistant'}]