Refer to the exhibit. How was the OSPF default gateway entry for R2 determined? -Default routes are automatically injected by OSPF into all advertisements. -A static default gateway route is defined in the configuration of R2. -The default-information originate command is applied on R1. -The ISP defines the gateway of last resort and automatically passes it to R1 and R2. -The ip default-gateway command is applied on R2.