Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true?（）

• A、The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.
• B、The DHCP Discover message uses UDP as the transport layer protocol.
• C、The DHCP Discover message uses a special Layer 2 multicast address as the destination address.
• D、The DHCP Discover message uses TCP as the transport layer protocol.
• E、The DHCP Discover message does not use a Layer 2 destination address.
• F、The DHCP Discover message does not require a transport layer protocol.