A Nurse Administers 100% Oxygen to a Client During and After

A nurse administers 100% oxygen to a client during and after electroconvulsive therapy treatment (ECT) .What is the rationale for this procedure?

A) To prevent increased intracranial pressure resulting from anoxia.
B) To prevent decreased blood pressure,pulse,and respiration owing to electrical stimulation.
C) To prevent anoxia resulting from medication-induced paralysis of respiratory muscles.
D) To prevent blocked airway,resulting from seizure activity.