In the Emergency Room, Saline Solutions Are Often Run into a Person's

Multiple Choice

In the emergency room, saline solutions are often run into a person's vein. The saline solution must be

A) 0.1% NaCl.
B) 0.5% NaCl.
C) 0.75% NaCl.
D) 0.9% NaCl.
E) 9.0% NaCl.