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 causative organism of rheumatic heart disease associated with rheumatic fever are: 
Select and explain. 
A. Beta hemolytic streptococci, B. Beta hemolytic staphylococci, C. Alpha hemolytic streptococci, D. Gamma hemolytic streptococci
A: Beta hemolytic streptococci
Answer: A: Beta hemolytic streptococci 
Explanation: None