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: Anatomy
[{'content': 'In a case of chest pain with pericarditis and pericardial effusion, pain is referred by - \nSelect and explain. \nA. Phrenic nerve, B. Superficial cardiac plexus, C. Deep cardiac plexus, D. Vagus nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Parietal pericardium is supplied by Phrenic nerve.', 'role': 'assistant'}]