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': "Tc labelled RBC's are used in which of the following condition? \nSelect and explain. \nA. Biliary disease, B. Renal disease, C. Pulmonary embolism, D. Splenic disease", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pulmonary embolism is diagnosed by angiography or V/P scans.', 'role': 'assistant'}]