When Preparing a Patient for a Pulmonary Function Test, Which

When preparing a patient for a pulmonary function test, which of the following should the nurse instruct the patient?

A) "Expect to be sedated for the test."
B) "Anti-nausea medication will be provided prior to the test."
C) "A nose clip will be worn during the test."
D) "Oxygen will be used for a while after the test."