You need to design a remote access strategy for the customer support users when they work from home. Your solution must meet security requirements. What should you do？（）

A. Deploy an L2TP/IPsec VPN server in each call center. Configure the portable computers as L2TP VPN clients
B. Create IPSec tunnel mode connections between the customer support users home and the company’s Internet-facing routers
Create IP packet filters on the company’s Internet-facing routers to allow the Remote Desktop Protocol （RDP）.Create IPSec filters on the terminal servers to allow only connections that use RDP
D. Create IP packet filters on the company’s Internet-facing routers to allow the IPSec protocols. Assign the Secure Server （Require Security） IPSec policy to the terminal servers. Assign the Client （Respond only） IPSec policy to the portable computer