The Baseline INR of a Client Receiving Warfarin (Coumadin)was 1

The baseline INR of a client receiving warfarin (Coumadin) was 1.2 seconds.The nurse notes that the INR value is 2.3 prior to administration of the next dose of medication.The appropriate nursing action is to:

A) Hold medication, and contact the physician.
B) Notify the physician so that the dose can be increased.
C) Administer the antidote, and observe for bleeding.
D) Administer the medication as ordered.