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
An individual has a fasting blood glucose concentration of 115 mg/dL on three occasions. What is your conclusion? 
Select and explain. 
A. He is normal, B. He is diabetic, C. He has impaired glucose tolerance, D. He needs further evaluation by other bio-chemical tests
C: He has impaired glucose tolerance
Answer: C: He has impaired glucose tolerance 
Explanation: None