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': 'In which of the following form of imaging, Harmonic Imaging is related - \nSelect and explain. \nA. Sonography, B. Digital radiography, C. MRCP, D. Nuclear imaging', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Harmonic imaging is a new imaging technique in USG', 'role': 'assistant'}]