A nurse is providing care for a client who has had a cast applied to her fractured arm 6 hours ...

A nurse is providing care for a client who has had a cast applied to her fractured arm 6 hours prior.
 
  The client is now complaining of severe pain that she describes as even worse than when I broke my arm. What would be the nurse's best course of action?
  A)
  Administration of analgesics and teaching the client about the normal course of pain after a fracture
  B)
  Teaching the client simple range of motion exercises to promote circulation and perfusion
  C)
  Taking the client's temperature due to the possibility of infection
  D)
  Assessment of motor and sensory function with the goal of identifying compartment syndrome