Which option must be listed in /etc/fstab to activate user quotas automatically?

Which option must be listed in /etc/fstab to activate user quotas automatically?

A.
quota

B.
user

C.
quotaon

D.
usrquota

Explanation/Reference:
To activate user quotas in partitions, you have to mount a partition with the option usrquota.

Additionally "quotaon -auvg" must be run in the init script to turn on quotas.