A nurse is providing teaching to the parent of an infant about car seat safety. Which of the following statements by the parent indicate an understanding of the teaching?

A. "I should place the shoulder harness above the level of my baby's shoulders.": For rear-facing seats, the harness straps should be at or just below shoulder level. B. "I should place the car seat rear-facing until my baby is 2 years old.": The American Academy of Pediatrics recommends that children remain in a rear-facing car seat until at least age 2 or until they exceed the height and weight limit set by the manufacturer. C. "I will place the retainer clip over my baby's abdomen.": The retainer clip should be positioned at armpit level (mid-chest) to protect vital organs. D. "I should position my baby at a 30-degree angle in the car seat.": The infant should be positioned at a 45-degree angle to prevent airway obstruction.