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 drug that is effective for rheumatoid arthritis but is not appropriate for osteoarthritis is : 
Select and explain. 
A. Acetaminophen, B. Infliximab, C. Ketorolac, D. Rofecoxib
B: Infliximab
Answer: B: Infliximab 
Explanation: None