This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ULTRASOUND, Subject name: Radiology
[{'content': 'Most commonly used method of display of ultrasound is \nSelect and explain. \nA. A-Mode, B. B-Mode, C. M-Mode, D. D-Mode', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Applications- A-Mode- Commonly used for orbital biometry,Axial Length of eyeball. B-Mode (Brightness) : Most commonly used mode. M-mode (motion): Used for valvular morphology and motion,Echocardiography and Fetal Hear Rate monitoring.', 'role': 'assistant'}]