The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Toxic shock syndrome is due to the following virulence factor:   (A) M protein   (B) Pyrogenic exotoxin   (C) Streptolysin 0   (D) Carbohydrate cell wall
['(B) Pyrogenic exotoxin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) M protein \n (B) Pyrogenic exotoxin \n (C) Streptolysin 0 \n (D) Carbohydrate cell wall <> possible answers', '  Toxic shock syndrome is due to the following virulence factor: <> context@']