An older adult with no significant medical history is admitted to the hospital through the emergency ...

An older adult with no significant medical history is admitted to the hospital through the emergency department after falling and fracturing her humerus. She does not require surgery and will probably be discharged the following day.
 
  Should the nurse be concerned about delirium?
  A) No, because the client does not have an underlying disease process
  B) No, because the client will not be hospitalized long enough to develop delirium
  C) Yes, because of the stress of the injury and the unfamiliar hospital environment
  D) Yes, because she may have suffered a traumatic brain injury when she fell