Which of the following statements about Rh factor incompatibility is true?
◦ The damage caused by Rh incompatibility can be avoided if the mother receives a blood transfusion during delivery.
◦ Rh-positive blood is dominant and Rh-negative blood is recessive, so the chances are good that a baby will be Rh-positive.
◦ Rh-positive babies are routinely given a vaccine at birth to prevent the buildup of harmful Rh antibodies.
◦ The harmful effects of Rh incompatibility can be prevented if the newborn is immediately placed on a diet low in phenylalanine.