ansible默认通过SSH协议管理机器，默认端口是（）

A.ansible-doc -m cron
B.ansible-doc -s cron
C.ansible-doc -o cron
D.ansible-doc -p cron

A.vim/etc/ansible/host
B.vim/etc/ansible/home
C.vim/etc/ansible/hosts
D.vim/etc/ansible/who

A.ansible test -m script -a
B.ansible test -m ping
C.ansible test -n script -a
D.ansible test -n ping