what can we learn from the above information?

Three routers RTA, RTB, and RTC are connected together through a LAN to form a VRRP backup group. The interface configuration of each router is as follows:

RTA’s GigabitEthernet

IP address 192.168.0.252 255.255.255.0

Vrrp vrid 1 virtual-ip 192.168.0.254

Vrrp vrid 1 priority 120 RTB GigabitEthernet

IP address 192.168.0.253 255.255.255.0

Vrrp vrid 1 virtual-ip 192.168.0.254

Vrrp vrid 1 priority 90 RTC GigabitEthernet

IP address 192.168.0.254 255.255.255.0

Vrrp vrid 1 virtual-ip 192.168.0.254

what can we learn from the above information?
A . RTA is the Master router of the backup group
B . RTB is the Master router of the backup group
C . RTC is the Master router of the backup group
D . After RTA is sent, RTB is the Master router of the backup group