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
Drugs inhibiting the formation of IL-2 are :  a) Cycloserine b) Cyclosporine c) OKT–3 d) Tacrolimus 
Select and explain. 
A. bd, B. a, C. c, D. ad
A: bd
Answer: A: bd 
Explanation: None