Which three statements describe the differences between RIP version 1 and RIP version 2? (Choose three.)（）

• A、RIP version 1 broadcasts updates whereas RIP version 2 uses multicasts.
• B、RIP version 1 multicasts updates while RIP version 2 uses broadcasts.
• C、Both RIP version 1 and RIP version 2 are classless routing protocols.
• D、RIP Version 2 is a classless routing protocol whereas RIP version 1 is a classful routing protocol.
• E、Both RIP version 1 and version 2 support authentication.
• F、RIP version 2 sends the subnet mask in updates and RIP version 1 does not.