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
At what value of one-hour glucose challenge test will you recommend a standard glucose tolerance test - 
Select and explain. 
A. 120 mg/dI, B. 140 mg/dI, C. 150 mg/dI, D. 160 mg/dI
B: 140 mg/dI
Answer: B: 140 mg/dI 
Explanation: None