Refer to the exhibit. A network administrator wants to reduce the number of OSPF routes advertised from Area 1 into Area 2. As the router configuration specialist, what two things would you do to accomplish this goal?（）
- A Enter the configuration on router B1.
- B Enter the configuration on router B4.
- C On the same router, enter the Summary - address 10.10.1.0 255.255.255.128 subcommand.
- D On the same router, enter the Area 1 range 10.10.1.0 255.255.255.128 subcommand.
- E On the same ro uter, enter the Area 2 range 10.10.1.0 255.255.255.128 subcommand.