A customer wants to TFTP a new image from the corporate network to Flash on the Teleworker router through the IPSec tunnel. How should you configure the Teleworker router?（）

• A、No additional steps are required. 
• B、Add the appropriate source-interface command. 
• C、The router cannot access a server in the Enterprise Campus network. 
• D、The Teleworker Router does not have any client applications; therefore this type of request is not possible.