Which command will add ethO to the bridge xenbr0?

Which command will add ethO to the bridge xenbr0?

A.
if up xenbr0 -a eth0

B.
Oracle WebLogic Server (WLS)

C.
brctl addbr xenbr0 eth0

D.
ifconfig add xenbr0 eth0

E.
netstat -a xenbr0 eth0