A Public Health Nurse Is Presenting a Workshop for a Local

A public health nurse is presenting a workshop for a local Parent Teacher Organization. After the presentation, one of the parents takes the nurse aside and asks her what causes chronic fatigue syndrome. What should the nurse respond?

A) "Some people think it is all psychological."
B) "We don't know for sure, it is all just theory and supposition."
C) "Some people think that B cells are activated in the beginning in response to a bacteria and inflammatory cytokines remain elevated."
D) "We don't know for sure but some think that T cells are activated initially in response to a virus and that levels of proinflammatory cytokines, such as various interleukins and tumor necrosis factor, remain elevated."