A client who is taking warfarin (Coumadin) after an acute a pulmonary embolism is transferred from the ICU after 5 days of heparin therapy. The nurse reviews the client's electronic medical record and notes an international normalized ratio (INR) of 3.4. After notifying the provider of this result, which order does the nurse expect for this client?
A) Administer protamine sulfate.
B) Give phytonadione.
C) Increase the warfarin dose.
D) Resume intravenous heparin.