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: Microbiology
Toxic shock syndrome is Staphylococcus infection is due to - 
Select and explain. 
A. Superantigen, B. Alpha-hemolysis, C. Coagulase, D. Penton Valentine factor
A: Superantigen
Answer: A: Superantigen 
Explanation: Ans. is 'a' i.e., Superantigen