If a router cannot find a valid configuration file during the startup sequence, what will occur?

     A.    The startup sequence will reset. 
     B.    The router will prompt the user for a response to enter setup mode. 
     C.    The startup sequence will halt until a valid configuration file is acquired.
     D.    The router will generate a default configuration file based on the last valid configuration.
     E.    The router will monitor local traffic to determine routing protocol configuration requirements

ANS: B