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
All of the following are m-tor inhibitors except: 
Select and explain. 
A. Sirolimus, B. Everolimus, C. Tacrolimus, D. Temsirolimus
C: Tacrolimus
Answer: C: Tacrolimus 
Explanation: Tacrolimus & cyclosporine are calcineurin inhibitors.