input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A researcher conducts multiple experiments to establish an infection and disease model for Clostridium perfringens in chickens. To ensure that all instruments are free of the pathogenic organism, he uses a disinfectant that oxidizes and denatures proteins. Which of the following disinfectants did the researcher most likely use?   (A) Chlorine dioxide   (B) Isopropyl alcohol   (C) Povidone-iodine   (D) Benzalkonium chloride
output: ['(A) Chlorine dioxide <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Chlorine dioxide  (B) Isopropyl alcohol  (C) Povidone-iodine  (D) Benzalkonium chloride <> possible answers', '  A researcher conducts multiple experiments to establish an infection and disease model for Clostridium perfringens in chickens. To ensure that all instruments are free of the pathogenic organism, he uses a disinfectant that oxidizes and denatures proteins. Which of the following disinfectants did the researcher most likely use? <> context']