In the OSPF broadcast network, there are 4 routers RTA, RTB, RTC and RTD in the same network segment, their priorities are 2, 2, 1 and 2 respectively, and the Router IDs are 172.16. 172.16.3.1 and 172.16.4.1.

In the OSPF broadcast network, there are 4 routers RTA, RTB, RTC and RTD in the same network segment, their priorities are 2, 2, 1 and 2 respectively, and the Router IDs are 172.16. 172.16.3.1 and 172.16.4.1.

If the OSPF protocol is started on the four routers at the same time, the DR selected by OSPF is _____.
A . RTA
B.RTB
C.RTC
D. RTDs

Answer: D