A Patient Is Scheduled for an Electroencephalogram

A patient is scheduled for an electroencephalogram.What preprocedure information should the nurse emphasize with this patient?

A) Avoid washing hair for two days prior to the test
B) Avoid caffeine for 8 to 12 hours before the test
C) Restrict the intake of fluids for six hours after the test
D) Apply minimal products to the hair the morning of the test