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
[{'content': 'Capsule endoscopy is used for – \nSelect and explain. \nA. GERD, B. Motility disorder, C. Bleeding, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Capsule endoscopy allows the noninvasive visualization of the mucosa throughout the small intestine. It is particularly useful in the evaluation of obscure gastrointestinal bleeding.', 'role': 'assistant'}]