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: Medicine
All of the following drugs may be used in the treatment of ulcerative colitis Except: 
Select and explain. 
A. Coicosteroids, B. Azathioprine, C. Sulfasalazine, D. Methotrexate
D: Methotrexate
Answer: D: Methotrexate 
Explanation: Answer is D (Methotrexate) Methotrexate has not been shown to be effective fbr treating active ulcerative colitis or for maintaining remission.