A child passenger restraint system (car seat) should be:

• Facing the rear of the car if the child is weighing less than 20 pounds and under 1 year old
• Facing forward if the child is one through three years old, and weighs more than 20 pounds
• Facing the rear of the car if the child is four through eight years old, regardless of weight
• Both A & B
  Explanation:

  "Children who are less than 1 year old and who weigh less than 20 pounds must be in a child passenger restraint system that is facing the rear of the car. Children who are one through three years old and who weigh more than 20 pounds must be in a child passenger restraint system that is facing forward."