A customer has four AIX partitions that require a SAN. The disk subsystem must replicate to aremote site via an IP network. Each site has two Cisco MDS 9509 directors with fibre channel linecards. Which of the following must be added to each director to meet the IP requirement？（）

• A、tri-rate SFP
• B、update to the latest Cisco IOS
• C、FCIP activation on the existing 16 FC line cards
• D、Multiprotocol Services Module with FCIP activation