You need to design a method to ensure that research intellectual property remains confidential. You solution must meet security requirements. What should you do？（）

• A、Require client computers to connect to research intellectual property through a SSL VPN
• B、Place SFSQL1 and ATLSQL1 on a separate virtual LAN from the internal network. Grant access to these virtual LAN segments to only the client computers that are used by authorized users
• C、Require that communications between SFSQL1， SFFP1， ATLSQL1， and ATLFP1 use IPSec
• D、Create a separate subnet for all servers that contain research intellectual property