You have implemented OSPF for IPv6 for the following areas in OSPF AS 1:

• 300-410 : All Parts

Explanation:
The area 10 range 2001:5050:D402:B333::/64 cost 130 command should be executed on rtrB. This command defines an area range for an area border router (ABR) that has OSPF for IPv6 enabled on it. This command provides a summary route of the routes in an OSPF area to be distributed to another area.

The range keyword in the command provides the summary route. The cost keyword in the command specifies the cost of the summary route. The highest cost of the routes that are being summarized becomes the cost of the summary route. In this case, the cost from rtrB to the 2001:5050:D402:B333:1:FE30::/96 network is 80, and the cost from rtrB to the 2001:5050:D402:B333:2:FE59::/96 network is 130. The cost of the summary route is 130 as it is higher.

All the other options are incorrect because they do not specify the correct cost of the summary route.

Objective:
Layer 3 Technologies
Sub-Objective:
Configure and verify OSPF for IPv6