The core Company switches are configured to use 802.1Q trunks. Which three statements are correct with regard to the IEEE 802.1Q standard？（）
- A The IEEE 802.1Q frame format adds a 4 byte field to a Ethernet frame
- B The packet is encapsulated with a 26 byte header and a 4 byte FCS
- C The protocol uses point-to-multipoint connectivity
- D The protocol uses point-to-point connectivity
- E The IEEE 802.1Q frame uses multicast destination of 0x01-00-0c-00-00
- F The IEEE 802.1Q frame retains the original MAC destination addre