When a Client Who Has Been Taking Warfarin (Coumadin) for 2

When a client who has been taking warfarin (Coumadin) for 2 years tells the nurse of plans for oral surgery, the nurse would caution the client to

A) avoid taking aspirin for postoperative pain.
B) contact the physician to arrange vitamin K injections before surgery.
C) obtain an International Normalized Ratio (INR) 1 day before surgery.
D) stop taking Coumadin for 3 or 4 days before surgery.