Which of the following descriptions MOST accurately portrays emergency medical services (EMS)?
A. A team of health care professionals who are responsible for providing emergency care and transportation to the sick and injured
B. A team of paramedics and emergency physicians who are responsible for providing emergency care to critically injured patients
C. A system composed exclusively of emergency medical responders (EMRs) and emergency medical technicians (EMTs) who are responsible for providing care to sick and injured patients
D. A vast network of advanced life support (ALS) providers who provide definitive emergency care in the prehospital setting
