Which of the following commands is run last during boot on a system with quotas enabled?

A.
mount

B.
quotaon

C.
quotacheck

D.
fsck

Explanation:
quotaon announces to the system that disk quotas should be enabled on one or more filesystems. The filesystem quota files must be present in the root directory of the specified filesystem and be named either aquota.user (for version 2 user quota), quota.user (for version 1 user quota), aquota.group (for version 2 group quota), or quota.group (for version 1 group quota).