Which of the following is true about "seniority rules"?

Josh’s headmaster fought to keep him, but his hands were tied; under the state’s strict "last in, first out" seniority rules, enshrined in statute, the most recent recruits had to be fired first, regardless of ability.

For much of its history, Tasmania was known primarily for its sheep and its prisoners. Occupied by Aborigines for an estimated 40, 000 years, it was invaded in 1803 by the British, who turned it into a notoriously harsh penal colony and developed the wool, mining and timber industries that remain important sectors of the Tasmanian economy today. Tourism, when it developed, revolved largely around the island’s spectacular natural beauty — its beaches, rain forests, Alpine mountains and abundant wildlife.