Till what age or weight should a child sit in a rear-facing infant or convertible seat?

• Till the child is 1 year and above 10 kgs.
• Till the child is 2 years and above 4 kgs.
• Till the child has reached the recommended weight to switch to a forward facing safety seat.
  Explanation:

  "All children, from birth, must ride in either a rear-facing infant seat or a rear-facing convertible seat until reaching the recommended weight to switch to a forward-facing safety seat, according to the manufacturer’s instructions"
• A child should switch seats when you want to.