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
Rotten apple smell of breath is associated with: 
Select and explain. 
A. Liver insufficiency, B. Kidney insufficiency, C. Unbalanced insulin dependent diabetes, D. Respiratory problems
C: Unbalanced insulin dependent diabetes
Answer: C: Unbalanced insulin dependent diabetes 
Explanation: None