The Nurse Is Assisting with Admission of a Patient with Guillain-Barré

The nurse is assisting with admission of a patient with Guillain-Barré syndrome (GBS) to a medical unit. The patient's legs are weak, making it impossible to walk without assistance. The patient says, "How did I get this? I'm not usually sick." Which response by the nurse is most accurate?

A) "No one knows what causes it."
B) "It is usually hereditary. Does anyone in your family have it?"
C) "It most often occurs as a result of a bacterial infection."
D) "It may be an autoimmune reaction to a virus."