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: Surgery
Tokyo guidelines are used to assess severity of which condition 
Select and explain. 
A. Peptic ulcer disease, B. GERD, C. Cholecystitis, D. IBD
C: Cholecystitis
Answer: C: Cholecystitis 
Explanation: Tokyo guidelines are used in diagnosing, assessing severity and treatment of cholecystitis and cholangitis.