A nurse is admitting a client who is at 30 weeks of gestation and is in preterm labor. The client has a new prescription for betamethasone and asks the nurse about the purpose of this medication. The nurse should provide which of the following explanations?

A. Betamethasone is not a tocolytic. It does not stop uterine contractions or delay labor. B. Betamethasone has no effect on the cervix and does not prevent cervical changes associated with preterm labor. C. Betamethasone is a corticosteroid given to mothers at risk of preterm delivery to accelerate fetal lung development and reduce the risk of respiratory distress syndrome in the newborn.