This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ultrasonography, CT, and MRI, Subject name: Radiology
[{'content': 'How much area is covered by spiral CT in 30 seconds? \nSelect and explain. \nA. Entire organ, B. Entire abdomen, C. Entire trunk, D. Whole body', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Whole bodyRef. Molecular anatomic imaging: PET-CT and Spect- Ct integrated Modality imaging by Gustav konrad von schulthessch 6', 'role': 'assistant'}]