Refer to the exhibit. ROUTE.com is planning to implement a new secure OSPF network to support traffic between clients on the 172.16.10.0/24 network and the file server on th e 172.16.20./24 network. You have been asked to review the implementation plan for the OSPF project. Which statement about the plan is true?（）

• A、It is complete as written.
• B、It should include a task that shuts down all unused interfaces.
• C、It sho uld include tasks that enable and verify OSPF authentication.
• D、It should include a task that establishes a file transfer baseline before and after the configuration is changed.