When Preparing a Patient for Electromyography (EMG),the Nurse Will Instruct

When preparing a patient for electromyography (EMG) ,the nurse will instruct the patient to:

A) cease smoking for 12 hours before the test.
B) refrain from caffeine drinks for 3 hours before the test.
C) take muscle relaxants before the test.
D) prepare for a lengthy testing time (usually about 2 hours) .