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': 'Screening test for gestational diabetes is? \nSelect and explain. \nA. Oral glucose tolerance test, B. Fasting blood sugar, C. Glycocyalted hemoglobin measurement, D. Random glucose challenge', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Random glucose challenge REF: Dutta 6th ed p. 285 "Screening for GDM is done by a random glucose challenge with 50 grams oral glucose irrespective of time of day"', 'role': 'assistant'}]