The nurse taught new parents the guidelines to follow regarding the bottle-feeding of their newborn. They will be using formula from a can of concentrate. The parents will demonstrate an understanding of the nurse's instructions if they do which action?

A. Wash the top of the can and can opener with soap and water before opening the can: Cleaning the can and opener reduces the risk of bacterial contamination, including Clostridium botulinum, which can be harmful to newborns. Safe handling practices are essential to prevent infection during formula preparation. B. Add some honey to sweeten the formula and make it more appealing to a fussy newborn: Honey should never be added to formula for infants under 12 months because it can contain spores of Clostridium botulinum, which may cause infant botulism. Sweetening formula is unsafe and contraindicated. C. Adjust the amount of water added according to the weight gain pattern of the newborn: Formula should be prepared strictly according to manufacturer instructions for concentration and water ratio. Altering water amounts can result in dehydration or electrolyte imbalance. Weight gain does not dictate mixing proportions. D. Warm formula in a microwave oven for a couple of minutes before feeding: Microwaving can create “hot spots” that may burn the infant’s mouth and throat. Safe warming methods include placing the bottle in warm water or using a bottle warmer, not a microwave.