An administrator is trying to connect to an RSA-II adapter using the default IP address found in the installation manual of 192.168.70.125.  The Web browser returns a "page cannot be displayed" message， and a ping returns a "request timed out" message.  Which of the following is the most likely cause of the problem？（）

• A、The RSA II adapter has obtained a DHCP assigned address.
• B、The RSA II adapter requires independent power to function.
• C、The Class C IP address space is not being bridged on the network.
• D、The RSA II adapter needs to be configured using a serial connection.