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
INFLIXIMAB (systemic) is used in 
Select and explain. 
A. Crohn's disease (treatment), B. To reduce the number of draining enterocutaneous fistula(s) in patients with fistuLizing crohn's disease, C. Rheumatoid arthritis (treatment), D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None