A Nurse Is Teaching a Group of Business People About

A nurse is teaching a group of business people about disease transmission. He knows that he needs to reeducate when one of the participants states which of the following?

A) "When traveling outside of the country, I need to be sure that I receive appropriate vaccinations."
B) "Food and water supplies in foreign countries can contain microorganisms to which my body is not accustomed and has no resistance."
C) "If I don't feel sick, then I don't have to worry about transmitted diseases."
D) "I need to be sure to have good hygiene practices when traveling in crowded planes and trains."