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
The drug most likely to be responsible for acute pancreatitis is : 
Select and explain. 
A. Didanosine, B. Ketoconazole, C. Saquinavir, D. Zidovudine
A: Didanosine
Answer: A: Didanosine 
Explanation: None