A nurse is caring for a client who is prescribed warfarin via oral (PO) route.Two hours after the administration of warfarin, the client reports having dark tarry stools and petechiae.Based on the client's presenting symptoms, which of the following options is an antidote for warfarin toxicity?

Choice A rationaleVitamin K1 is used as an antidote for warfarin toxicity because it helps in the synthesis of clotting factors, reversing the anticoagulant effects of warfarin.Choice B rationaleProtamine sulfate is used to counteract the effects of heparin, not warfarin.Choice C rationaleHeparin is an anticoagulant and would worsen bleeding if given in the case of warfarin toxicity.Choice D rationaleDigibind is used to treat digoxin toxicity and has no role in reversing the effects of warfarin. .