A Patient Who Has Prescriptions for Both an Intravenous Pyelogram

A patient who has prescriptions for both an intravenous pyelogram and a barium enema tells the nurse, "I will schedule the intravenous pyelogram to be done before the barium enema." Which of these responses by the nurse is most appropriate?

A) "Please make your appointments as you have indicated."
B) "Please clarify with your primary healthcare provider which should be completed first."
C) "Please reverse the order of your planned appointments."
D) "The order of the tests is irrelevant. You may change the order to meet your needs."