This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Targeted Anticancer Drugs and Immunosuppressants, 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: Glucocoicoids 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.