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

• A、It is complete as written
• B、It should include a task that verifies that the interarea routes are using the proper MED
• C、The plan should include a task that verifies that load sharing is active on the appropriate links
• D、The plan should include  a task that verifies end - to - end connectivity between the clients and the file server