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
The commonest tumor of the myocardium is : 
Select and explain. 
A. Myxoma, B. Rhabdomyoma, C. Sarcoma, D. Fibroma
A: Myxoma
Answer: A: Myxoma 
Explanation: Answer is A (Myxoma) The commonest tumor of myocardium is a myxoma.