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': 'Which of the following is the order of activation after stimulation of purkinje fibers \nSelect and explain. \nA. Septum> Endocardium> Epicardium, B. Endocardium > Septum > Epicardium, C. Epicardium > Septum > Endocardium, D. Septum > Epicardium > Endocardium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]