A patient taking warfarin for atrial fibrillation has a routine INR checked, which is found to be 9.2. There is no evidence of bleeding. According to NICE guidance on anticoagulation, what is the most appropriate immediate management?AAdminister intravenous Vitamin K 5mg and stop warfarinBStop warfarin, repeat INR next dayCAdminister fresh frozen plasma (FFP)DContinue warfarin at a lower doseEAdminister oral Vitamin K 1-5mg and stop warfarinCheck my answer