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: Radiology
String of beads appearance on abdominal X-ray is seen in – 
Select and explain. 
A. Small bowel obstruction, B. Large bowel obstruction, C. Carcinoma of stomach, D. Gastric outlet obstruction
A: Small bowel obstruction
Answer: A: Small bowel obstruction 
Explanation: String of beads sign is virtually diagnostic of small bowel obstruction.
String of beads in radiology

           Small bowel obstruction
           Chronic pancreatitis
           Fibromuscular dysplasia