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': 'The gestational age at which a primigravida with cholestasis of pregnancy should be delivered safely: \nSelect and explain. \nA. 34 weeks, B. 36 weeks, C. 38 weeks, D. 40 weeks', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Once a diagnosis of intrahepatic cholestasis of pregnancy (ICP) is made, fetal surveillance twice per week with nonstress testing and/or biophysical profiles is recommended. The optimal timing of delivery is at 37-38 weeks or delivery at 36 weeks after confirmation of fetal lung maturity with amniocentesis. Ref: Winkel A.F. (2013). Chapter 30. Dermatologic Disorders in Pregnancy. In A.H. DeCherney, L. Nathan, N. Laufer, A.S. Roman (Eds), CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 11e.', 'role': 'assistant'}]