Refer to the exhibit.

The five routers shown in the exhibit are successfully implementing OSPF on the interface shown in the exhibit.
The exhibit also shows settings for OSPF areas and interface costs.
A network administrator enters these commands on Router 4 and Router 5:

How can the administrator ensures that Router 2 learns the route to 172.16.0.0/16 with next hop 10.0.0.6?

A.
On Router 2, enables OSPF ECMP globally

B.
On Router 4 and 5, change the metric type for redistributed static routes to type 1

C.
On Router 4, change the cost for redistributed static routes to 2

D.
On Router 2, 3, 4 and 5, change the bandwidth reference value to 100

Explanation:
The LSA types defined in OSPF are as follows:
Type 1 – Router LSA – point-to-point connection to another router
Type 2: Network LSA – connection to a transit network
Etc.
https://en.wikipedia.org/wiki/Link-state_advertisement