Which set of configurations must the engineer implement?

Refer to the exhibit.

R5 is the current DR on the network, and R4 is the BDR. Their interfaces are flapping, so a network engineer wants the OSPF network to elect a different DR and BDR.

Which set of configurations must the engineer implement?

Option A

R4(config)#interface gi0/0

R4(config-if)#ip ospf priority 20

R5(config)#interface gi0/0

R5(config-if)#ip ospf priority 10

Option B

R2(config)#interface gi0/0

R2(config-if)#ip ospf priority 259

R3(config)#interface gi0/0

R3(config-if)#ip ospf priority 256

Option C

R3(config)#interface gi0/0

R3(config-if)#ip ospf priority 255

R2(config)#interface gi0/0

R2(config-if)#ip ospf priority 240

Option D

R5(config)#interface gi0/0

R5(config-if)#ip ospf priority 120

R4(config)#interface gi0/0

R4(config-if)#ip ospf priority 110
A . Option A
B . Option B
C . Option C
D . Option D