The nurse is evaluating the new mother's knowledge about appropriate infant bottle feeding techniques. Which statement by the client reassures the nurse that correct learning has taken place?

"I burp my daughter during and after the feeding and as needed."

"Since reaching 2 weeks of age, I add rice cereal to my daughter's formula to ensure adequate nutrition."

"I warm the bottle in my microwave oven."

"I refrigerate any leftover formula for the next feeding."