正解:C
The goal is to prevent R3 from receiving the LSA about 172.16.1.4/32. To achieve this, a prefix-list is used to filter out the specific LSA updates in OSPF routing. Option C shows a configuration on router R3 that denies the prefix 172.16.1.4/32 using a prefix-list named INTO-AREA1, which is then applied to OSPF area 0 with the 'area 1 filter-list prefix INTO-AREA1 in' command. References: Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) v1.0 - This content can be found within the official Cisco SPCOR study materials, where it discusses OSPF routing and route filtering using prefix lists.