Which Statement by the Nursing Assistant Indicates the Need for Further

Which statement by the nursing assistant indicates the need for further teaching regarding infection control measures for patients with Clostridium difficile (C diff) ?

A) "Alcohol-based hand sanitizers are most effective for patients with C diff."
B) "It is important that I use soap and water to wash my hands when working with patients with C diff."
C) "I need to rub my hands together to remove the C diff spores."
D) "I need to make sure the family members wash their hands often."