This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumor, Subject name: Pathology
[{'content': 'Most Common "Primary" Tumor of Heart is? \nSelect and explain. \nA. Rhabdomyoma, B. Fibroma, C. Myxoma, D. Lipoma', 'role': 'user'}, {'content': "Answer: C \nExplanation: ANSWER: (C) MyxomaREF: Robbins 8th Edn Page 583, 584, Harrison's 17th ed p-1495Repeat Pathology 2004See details of Myxoma in Surgery December 2011", 'role': 'assistant'}]