Refer to the exhibit. How would you confirm on R1 that load balancing is actually occurring on the default - netw ork (0.0.0.0)?（）

• A、Use ping and the show ip route command to confirm the timers for each default network resets to 0.
• B、Load balancing does not occur over default networks; the second route will only be used for failover.
• C、Use an extended ping al ong with repeated show ip route commands to confirm the gateway of last resort address toggles back and forth.
• D、Use the traceroute command to an address that is not explicitly in the routing table.