i just need the explanation.

5. If the switch reboots and all routers have to re-establish OSPF adjacencies, which routers will become the new DR and BDR? Router ID 1.1.1.1 Priority 2 R1 Loo 192.168.1.100/32 .1 Router ID 3.3.3.3 Priority 1 OSPF Router ID 2.2.22 Priority 1 R2 R3 LOO 192.168.3.100/32 Loo 192.168.2.100/32 10.0.0.0/16 L00 192.168.4.100/32 Router ID 4.4.4.4 Priority 2 R4