A postpartum client who is 2 days post-vaginal delivery reports cramping in her lower abdomen that worsens while she is breastfeeding. Which response by the nurse best explains this finding?

"Breastfeeding causes the release of oxytocin, which contracts your uterus.”.

"You should stop breastfeeding until the pain subsides.”.

"The cramps mean your uterus isn't healing properly.”.

"This may be a sign of uterine infection.”. —