A Patient Is Scheduled for an Electromyelogram (EMG)

A patient is scheduled for an electromyelogram (EMG) . What should the nurse instruct the patient about this diagnostic test?

A) Do not smoke for 3 hours before the test.
B) Do not take any medication prior to this test without physician approval.
C) The test measures nerve conduction along pathways.
D) The test measures electrical activity of skeletal muscles at rest.
E) Fluids containing caffeine are permitted prior to the test.