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14. Refer to the topology in Figure 4-21. Which prefix list configured on R3 would allow R1 to know about networks 172.16.10.0/24 and 172.16.11.0/24?

From

Cover of Implementing Cisco IP Routing (ROUTE) Foundation Learning Guide: (CCNP ROUTE 300-101)

Note

The above networks are contained within 172.16.0.0/16. The answer B would prevent a /16 from being redistributed into OSPF from EIGRP, but would still allow the networks above to be redistributed into OSPF.