Before Electroencephalography,a Client Asks,"Why Will I Be Asked to Take

Before electroencephalography,a client asks,"Why will I be asked to take deep breaths during the procedure?" How does the nurse respond?

A) "Hyperventilation causes cerebral vasodilatation and increases the likelihood of seizure activity."
B) "Hyperventilation causes cerebral vasoconstriction and increases the likelihood of seizure activity."
C) "Deep breathing will keep you relaxed and will lower the seizure threshold."
D) "Deep breathing will make you hypoxemic, which lowers the seizure threshold."