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': 'Which of the following is the best view for visualizing minimal pneumoperitonium:- September 2005 \nSelect and explain. \nA. X-ray abdomen-erect view, B. X-ray abdomen-supine view, C. Left lateral decubitus with horizontal beam, D. Left lateral view with veical beam', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Left lateral decubitus with horizontal beam', 'role': 'assistant'}]