This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2017, Subject name: Medicine
Initial treatment for management of mild to moderate Crohn's disease is: 
Select and explain. 
A. Mesalamine, B. Infliximab, C. Budesonide, D. Sulfasalazine
C: Budesonide
Answer: C: Budesonide 
Explanation: Sulfasalazine is DOC for UC ulcerative colitis) UC exacerbation - Budesonide enema. (20 bloody stool / day)