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
Belimumab is used in 
Select and explain. 
A. Osteoporosis, B. Malignant melanoma, C. Merkel cell carcinoma, D. Systemic lupus erythematous
D: Systemic lupus erythematous
Answer: D: Systemic lupus erythematous 
Explanation: Belimumab is a monoclonal antibody against B - cell activating factor ( BAFF ) and is thus useful in decreasing autoimmune response in Systemic lupus erythematous .