The Nurse Explains That the Rh-Negative Mother Who Should Receive

The nurse explains that the Rh-negative mother who should receive RhoGAM is the mother who:

A) has had one Rh-negative child and is pregnant with an Rh-negative child.
B) had an Rh-positive infant and is pregnant with an Rh-positive fetus.
C) has had an O-negative child and is pregnant with a B-negative child.
D) is a primipara with an O-negative child.