While performing post-mortem care on Mr. Smith, he produced a sound from his mouth while being repositioned. The nurse aide realizes this is:

a. normal, he was resuscitated successfully, regaining his life
b. normal, moving Mr. Smith's body can expel air resulting in the production of sound
c. not normal, deceased persons should never be able to make noise
d. not normal, this only occurs in extreme circumstances and should be reported immediately