The following configuration command was issued on router TK1:ip route 172.16.3.0 255.255.255.0 192.168.2.1.Which of the following statements are true regarding this command?（）

• A、The command is used to establish a static route.
• B、The default administrative distance is used.
• C、The command is used to configure the default route.
• D、The subnet mask for the source address is 255.255.255.0
• E、The command is used to establish a stub network