Deploying ISRs with integrated security services can help lower the total cost of ownership. Which of these Cisco ISR Routers features illustrate this point？（）

• A、 using built-in on-board VPN acceleration to reduce the amount of VPN configuration tasks
• B、 using the USB port to perform fast Cisco lOS image upgrade
• C、 using the security audit feature to implement inline Intrusion Prevention System
• D、 using the SDM configuration tool to reduce training costs
• E、 using the high performance AIM to increase the Cisco lOS Firewall performance