You need to design an access control strategy for the marketing application. You solution must minimize impact on server and network performance. What should you do？（）

• A、Require client computers to connect to the marketing application by using a VPN connection
• B、Use IPSec to encrypt communications between the servers in the New York and Atlanta offices
• C、Require the high security setting on Terminal Services connections to the marketing application
• D、Configure all marketing application Web pages to require SSL