Which three statements&#81

Which three statements about firewall modes are correct？ （）

• A A firewall in routed mode has one IP address
• B A firewall in transparent mode has one IP address
• C In routed mode， the firewall is considered to be a Layer 2 dew
• D In routed mode， the firewall is considered to be a Layer 3 device
• E In transparent mode， the firewall is considered to be a Layer 2 device
• F In transparent mode， the firewall is considered to be a Layer 3 device