A Patient Who Is Taking Warfarin [Coumadin] Has Just Vomited

A patient who is taking warfarin [Coumadin] has just vomited blood. The nurse notifies the provider, who orders laboratory work revealing a PT of 42 seconds and an INR of 3.5. The nurse will expect to administer:

A) phytonadione (vitamin K1) 1 mg IV over 1 hour.
B) phytonadione (vitamin K1) 2.5 mg PO.
C) protamine sulfate 20 mg PO.
D) protamine sulfate 20 mg slow IV push.