A nurse is teaching the parent of an infant about car seat safety. Which of the following instructions should the nurse include?

A. "Fasten the harness over your infant's winter coat.": Thick clothing, like winter coats, can compress in a crash, causing the harness to fit loosely and increasing injury risk. The harness should be snug directly on the infant’s body, with blankets placed over after securing. B. "Keep the car seat in a rear-facing position until your infant is 2 years old.": Rear-facing car seats provide the best protection for infants’ heads, necks, and spines during a crash. Infants should seat rear-facing until at least 2 years of age. C. "Pad the backrest of the car seat with a thick blanket before securing your infant.": Adding padding behind the infant can alter the fit and safety of the car seat. It is not advised to add any padding that did not come with the seat. D. "Ensure the airbag is activated if the car seat is in the front passenger seat.": Airbags pose a serious risk to infants in car seats placed in the front passenger seat. It is safest to place infants in the rear seat, away from active airbags.