A Patient Who Is Scheduled to Have a Hemoglobin A1C

A patient who is scheduled to have a hemoglobin A1C level drawn asks the nurse about the purpose of the test. Which of the following would be an appropriate response for the nurse to make to this patient?

A) "It's to check for pancreas functioning."
B) "It's a blood test to check for kidney functioning."
C) "It's to check for thyroid functions."
D) "It's a blood test to check for menopausal symptoms."