Following a simple extraction of tooth 4.7, hemostasis was achieved. Forty-eight hours later, there is renewed bleeding from the extraction site. Firm pressure fails to achieve hemostasis. The most appropriate management is to

obtain an international normalized ratio (INR) and a complete blood count.

give local anesthetic and electrocauterize the socket.

apply firm pressure and ice for 10 minutes.

give local anesthetic, pack and suture.