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
Certolizumab is used in the treatment of : 
Select and explain. 
A. Multiple Sclerosis, B. Colorectal Carcinoma, C. Crohn's disease, D. SLF2
C: Crohn's disease
Answer: C: Crohn's disease 
Explanation: Certolizumab is a monoclonal antibody against TNFα used for Crohn's disease.