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 diabetes which has highest sensitivity : \nSelect and explain. \nA. Glycosylated Hb, B. Blood frucosamine, C. 50gms glucose challenge test, D. RBS', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 50gms glucose challenge test', 'role': 'assistant'}]