Class 5Z are going out on a school trip to Mathsland.

There are 20 members of Class 5Z.

There are 12 girls and 8 boys.

They are getting on the school bus to take them to Mathsland.

They are arranged in a random order.

The picture shows the members of Class 5Z.

Which word correctly describes the following event:

The last pupil getting on the bus will be a boy.