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: Dental
Carbamide solution used for bleaching degrades into 
Select and explain. 
A. 0.3% sodium perborate, B. 30% hydrogen peroxide, C. 3% hydrogen peroxide, D. 30% sodium perborate
C: 3% hydrogen peroxide
Answer: C: 3% hydrogen peroxide 
Explanation: None