This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Which of the following drug causes acute pancreatitis 
Select and explain. 
A. L-Asperaginase, B. Metronidazole, C. Ciprofloxacin, D. Penicillin
B: Metronidazole
Answer: B: Metronidazole 
Explanation: Drugs associated with pancreatitis Definitive cause (MAD CAT PET TV FM) 6-Mercaptopurine Azathioprine Dideoxyinosine Cytosine arabinoside 5-Aminosalicylate Tetracycline Pentamidine Estrogens Trimethoprim - Sulfamethoxazole Thiazide Valproic acid Furosemide Metronidazole Probable cause (PILAAS) Phenformin Procainamide Isoniazid L-Asperaginase Acetaminophen Alpha-Methyl-dopa Sulindac Ref: Sabiston 20th edition Pgno : 1526