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
Presence of glucose in urine indicates: 
Select and explain. 
A. Patient suffers from diabetes insipidus, B. Patient has consumed excess sugar over long years, C. Renal threshold for glucose is exceeded, D. None of the above
C: Renal threshold for glucose is exceeded
Answer: C: Renal threshold for glucose is exceeded 
Explanation: None