A nurse is reinforcing teaching about car seat safety with a parent of a newborn. Which of the following statements by the parent indicates an understanding of the teaching?

Choice A reason: A 90-degree angle is too upright; newborns need a 30-45-degree recline to protect airways. This shows misunderstanding of safe positioning.Choice B reason: Rear-facing until age 2 supports neck and spine safety, per guidelines. This reflects correct understanding of car seat standards for newborns.Choice C reason: Retainer clips belong at chest level, not belly, for harness safety. This indicates incorrect knowledge of car seat strap placement.Choice D reason: Airbags endanger front-seat infants; rear seating is mandatory. Enabling them shows a dangerous misunderstanding of car seat safety protocols.