Where are the default settings for the useradd command kept?

A.
/etc/default/useradd

B.
/etc/.useradd

C.
/etc/defauls/useradd

D.
/etc/sysconfig/useradd.cfg

Explanation:
From the man pages:
useradd will use the base directory specified by the HOME variable in /etc/default/useradd, or /home by default.