This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pathology
[{'content': 'Most common primary cardiac tumor is? \nSelect and explain. \nA. Myxoma, B. Rhabdomyosarcoma, C. Fibroma, D. Lipoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Myxoma * The most common cardiac tumor is metastasis (secondries).* The most common primary cardiac tumor (overall) is cardiac myxoma.* Most common primary cardiac tumor in adults is cardiac myxoma. The most common primary cardiac tumor in infant and children is rhabdomyoma.", 'role': 'assistant'}]