This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
The following is not an immunomodulator 
Select and explain. 
A. Tacrolimus, B. Cyclosporin, C. Cylcoserin, D. Sirolimus
C: Cylcoserin
Answer: C: Cylcoserin 
Explanation: Cycloserine is an antibiotic. Remaining all are immune-modulators which are calcineurin inhibitors.Ref: Katzung 13th ed Pg 1135