Which two statements are correct about Layer 2 broadcast frames?()
A、A. Layer 2 broadcast frames are processed by all devices on the same VLAN
B、B. Layer 2 broadcast frames are are discarded by routers that connect to multiple VLANs
C、C. Layer 2 broadcast frames are relayerd by routers to all connected VLANs
D、D. Layer 2 broadcast frames are relayed by switches to devices on the same VLAN