A nurse is preparing to administer methylergonovine IM for a client who had a vaginal delivery earlier that day. The nurse should explain to the client that this medication will help prevent which of the following?

A. Methylergonovine is not indicated for preventing postpartum infections. Its primary action is on uterine smooth muscle to induce contractions, rather than having antimicrobial properties. B. While methylergonovine can cause hypertension as a side effect, it's not used to prevent hypertension. It is used primarily to prevent or treat postpartum hemorrhage by promoting uterine contraction. C. Methylergonovine is a uterotonic medication used to prevent or treat postpartum hemorrhage by causing uterine contractions, thereby reducing the risk of excessive bleeding after childbirth. D. Methylergonovine does not prevent thromboembolic events; its mechanism of action primarily involves stimulation of uterine smooth muscle contraction rather than affecting blood coagulation.