Bradley Is Deeply Relaxed, and His Muscles Are Not Moving

Multiple Choice

Bradley is deeply relaxed, and his muscles are not moving at all. This suggests that, for Bradley's motor neurons,

A) sodium ions are concentrated inside the neurons and chloride ions are concentrated outside the neurons.
B) sodium ions and potassium ions are both concentrated inside the neurons.
C) sodium ions and potassium ions are both concentrated outside the neurons.
D) sodium ions are concentrated outside the neurons and chloride ions are concentrated inside the neurons.