Which One of the Following Constitutes a Breach of the EMT's

Which one of the following constitutes a breach of the EMT's duty, placing him at risk for the charge of negligence?

A) Transporting a competent patient who does not want transport to the hospital
B) Applying oxygen to a patient who is not complaining of shortness of breath
C) Obtaining an informed and signed refusal from a competent patient with abdominal pain
D) Obtaining a refusal from a patient without obtaining vital signs