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: Medicine
[{'content': 'Most common tumour of hea is: \nSelect and explain. \nA. Myxoma, B. Rhabdomyosarcoma, C. Fibroma, D. Leiomyosarcoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Myxoma) Remember The most frequent cardiac tumor for all age groups is - Metastasis. The most frequent primary cardiac tumor for age groups is - Myxoma. The most frequent primary cardiac tumor in infants and children is - Rhabdomyoma', 'role': 'assistant'}]