A router has computed the following paths: packets to prefix 57.6.96.0/21 are sent through line 1, packets to 57.6.104.0/21 through line 1, packets to 57.6.112.0/21 through line 2, and packets to 57.6.120.0/21 through line 1. Which one of the following is not a valid routing table configuration given these paths?