A Client Says,"I Don't Know How They Can Think My

A client says,"I don't know how they can think my baby has Down syndrome when all they've done is routine testing and an ultrasound." How should the nurse respond to this statement?

A) "The ultrasound can show the distinctive loss of curve in the spine that indicates Down syndrome."
B) "The prenatal blood test you had is a definitive test for Down syndrome."
C) "The ultrasound shows a difference in the neck that confirms the suspicion of Down syndrome."
D) "The combination of the ultrasound and blood test results confirms the suspicion of Down syndrome,but more testing will be done."