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: Physiology
[{'content': 'During cardiac imaging, the phase of minimum motion of heart is \nSelect and explain. \nA. Late systole, B. Mid systole, C. Late diastole, D. Mid diastole', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]