Which statement shows that the EMT understands the use of a tourniquet in controlling bleeding?

A) "A tourniquet should be applied tightly enough that arterial blood flow distal to the tourniquet is completely stopped."
B) "If the tourniquet appears to have stopped the bleeding, the EMT should loosen it slightly to allow a small amount of blood to perfuse the tissues."
C) "If a blood pressure cuff is used as a tourniquet, the EMT should inflate it approximately 50 mmHg above the patient's systolic blood pressure."
D) "Since arteries run close to the body's surface in a joint, the best place to apply a tourniquet is over the joint just above the site of hemorrhage."

A) "A tourniquet should be applied tightly enough that arterial blood flow distal to the tourniquet is completely stopped."