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
Saturated aceyl enzyme formation causes: 
Select and explain. 
A. Freeing of PAN-SH site, B. Freeing of Cyst - SH site, C. Both, D. None
A: Freeing of PAN-SH site
Answer: A: Freeing of PAN-SH site 
Explanation: A i.e. Freeing of PAN-SH site