How would you do this?

You want there to be 3 grace days after a password expires before an account becomes disabled. How would you do this?

A.
Use the useradd command with the -f switch

B.
Check the delay option in user admin

C.
Edit the user’s user.conf file

D.
Use the useradd command with the -d switch

Explanation:
useradd [-c comment] [-d home_dir]

[-e expire_date] [-f inactive_time]
[-g initial_group] [-G group[,…]]
[-m [-k skeleton_dir] | -M] [-n] [-o] [-p passwd] [-r]
[-s shell] [-u uid] login