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: Surgery
[{'content': 'Liver malignancies can be studied by - \nSelect and explain. \nA. Radionuclear study, B. Ultrasound, C. CT, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans d i.e. All', 'role': 'assistant'}]