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
Virulence determinant implicated in pathogenesis of scarlet fever is - 
Select and explain. 
A. Hyaluronidase, B. M protein, C. Pyrogenic exotoxin, D. Streptokinase
A: Hyaluronidase
Answer: A: Hyaluronidase 
Explanation: Ans. is 'a' i.e., Pyrogenic exotoxin