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
A widely used drug that suppresses cellular immunity inhibits prostaglandin and leukotriene synthesis and increases the catabolism of IgG antibody is : 
Select and explain. 
A. Cyclophosphamide, B. Prednisone, C. Cyclosporine, D. Infliximab
B: Prednisone
Answer: B: Prednisone 
Explanation: Glucocorticoids are powerful immunosuppressants. These inhibit both cellular and humoral immunity by:

Decreasing the recruitment of immune cells.
Catabolism of immunoglobulins.
Inhibiting the enzyme phospholipase A2 resulting in decreased production of PGs, LTs and TXs.