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 screening test for gestational diabetes mellitus that has highest sensitivity is : \nSelect and explain. \nA. Glycosylated Hb, B. Blood fructosamine, C. 50gms glucose challenge test, D. Random blood sugar', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 50gms glucose challenge test', 'role': 'assistant'}]