A nurse is providing discharge teaching to a new guardian about car seat safety. Which of the following statements by the guardian indicates an understanding of the teaching?

"I should place the car seat rear-facing until my baby is 12 months old."

"I should position the retainer clip at the top of my baby's abdomen."

"I should position my baby's car seat at a 45" angle in the car

"I should place the harness snugly in a slot above my baby's shoulders."