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: Pharmacology
Which of the following chelating agent is the degradation product of Penicillin ? 
Select and explain. 
A. EDTA, B. Dimercaprol, C. Penicillamine, D. Desferrioxamine
C: Penicillamine
Answer: C: Penicillamine 
Explanation: None