What does the U in A-V-P-U stand for?

What does the U in A-V-P-U stand for?
 
  A) Uncooperative
  B) Unresponsive
  C) Unconscious
  D) Unaccessible

Question 2

A patient involved in a motor vehicle collision is complaining of neck pain. Which of the following pieces of information should cause the AEMT to have a high index of suspicion that the patient may have suffered more significant injuries beyond the complaint of neck pain?
 
  A) No airbags in the car
  B) History of heart problems
  C) Complaint of head and neck pain
  D) Death of the car's driver

Question 3

You are on the scene of a 34-year-old man who is breathing but not awake. After determining that he does NOT respond to verbal stimuli, your next action would be to:
 
  A) place him on a backboard and perform a secondary assessment en route to the hospital.
  B) open his airway.
  C) apply a painful stimuli.
  D) apply manual cervical spine immobilization.