A child under 12 years old travelling in the back seat, how many seats do they occupy?

A child under 12 years old travelling in the back seat, how many seats do they occupy?
A)Half a seat.
B)One seat.Correct
C)One seat if the seat is approved, half a seat if it is not approved.
A person travelling in a vehicle, regardless of age, will always occupy a full seat. If your manual states otherwise, we confirm that it is not up to date. In the past, children counted as half a seat.