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: Medicine
[{'content': 'At what value of one-hour glucose challenge test will you recommend a standard glucose tolerance test - \nSelect and explain. \nA. 120 mg/dI, B. 140 mg/dI, C. 150 mg/dI, D. 160 mg/dI', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]