This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastro Intestinal System, Subject name: Pediatrics
14-year-old girl with history of postprandial abdominal pain (periumbilical), fever, weight loss since ten months. She also has episodes of passing blood in stools. What may be the likely diagnosis? 
Select and explain. 
A. Chronic appendicitis, B. Chronic pancreatitis, C. Crohn's disease, D. Bulimia
C: Crohn's disease
Answer: C: Crohn's disease 
Explanation: c. Crohn's disease(Ref: Nelson's 20/e p 1819, Ghai 8/e p 304)Blood in stools, abdominal pain and systemic features like fever and weight loss for months is suggestive of Inflammatory bowel disease.