The Nurse Instructs a Patient with a Nosebleed to Sit

The nurse instructs a patient with a nosebleed to sit up and lean slightly forward.Why did the nurse teach the patient to use this posture?

A) To prevent dizziness or syncope
B) To reduce bleeding from the anterior plexus
C) To help prevent symptoms of shock due to blood loss
D) To prevent unseen blood from being swallowed or aspirated