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: Biochemistry
Uric acid is formed by ? 
Select and explain. 
A. Catabolism of proteins, B. Catabolism of ketones, C. Catabolism of purines, D. Catabolism fo pyrimidines
C: Catabolism of purines
Answer: C: Catabolism of purines 
Explanation: Ans. is 'c' i.e., Catabolism of purines