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': 'Minimal Ascites can be best detected by: \nSelect and explain. \nA. USG, B. Plain X-ray abdomen, C. MRI, D. CT scan', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. USG Earliest detection Investigation Ascites USGQ Pericardial effusion EchocardiographyQ Bronchiectasis CT-ScanQ Fetal life DopplerQ Pleural effusion IA lateral decubitus viewQ Pneumoperitonum Erect chest X-ray or left lateral decubitus abdominal X-rayQ', 'role': 'assistant'}]