As You Begin a Barium Study of the Colon,the Patient

As you begin a barium study of the colon,the patient states clearly that she wants the examination to stop.A professional imaging technologist should

A) turn off the barium,clean up the patient,and help her exit the room quickly.
B) record the amount of barium given to the patient and charge her accordingly.
C) insist that she can handle the barium enema and that after you have started,it needs to be completed because you cannot get the barium out.
D) stop the barium,drain as much of it as possible from the patient's colon,and conclude the examination.