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: Physiology
The renal threshold for glucose is: 
Select and explain. 
A. 180 mg / dl, B. 100 mg /dl, C. 120 mg / dl, D. 80 mg / dl
A: 180 mg / dl
Answer: A: 180 mg / dl 
Explanation: None