The parent of a newborn asks the nurse about exclusive breastfeeding. Which response should the nurse provide?

A. "You can give small amounts of water between feedings if your baby seems thirsty.": Newborns receive adequate hydration from breast milk alone. Introducing water can reduce nutrient intake, interfere with electrolyte balance, and increase the risk of water intoxication in infants under 6 months. B. "Introducing iron-fortified cereal at 3 months helps your baby sleep longer.": Early introduction of solids is not recommended. Solids before 6 months can increase the risk of allergies, gastrointestinal infections, and interfere with breastfeeding. Iron-fortified cereals are usually introduced around 6 months when developmental readiness is present. C. "Your baby should receive only breast milk, without formula, water, or solid foods, for the first 6 months.": Exclusive breastfeeding for the first 6 months is recommended by the WHO and AAP. Breast milk provides complete nutrition, optimal hydration, and immune protection during this period, supporting growth, development, and infection prevention. D. "Supplementing with formula at night improves your milk supply.": Supplementing with formula can actually decrease maternal milk production by reducing infant demand and stimulation of the breasts. Exclusive breastfeeding encourages adequate milk supply through regular nursing.