Which two statements about VTPv3 are true? (Choose two)

Which two statements about VTPv3 are true? (Choose two)

A.Extended VLANs prevent VTPv3 switches from becoming VTPv2

B.VTPv3 must receive VTPv2 packets before it can send VTPv2 packets

C.VTPv3 accepts configuration information only from VTPv2 devices

D.VTPv3 sends VTPv2 packets when they are detected on a trunk port

E.VTPv3 regions can communicate in server mode only over a VTPv2 region

正确答案是AB