The correct answer is B. Router A.
VRRP elects the Master (primary virtual router) based on:
* Highest priority (default = 100)
* If priorities are equal # highest IP address wins
* Router A
IP: 192.168.0.100
Priority: default (100)
* Router B
IP: 192.168.0.2
Priority: default (100)
* Router C
IP: 192.168.0.3
Priority: 80
* Router D
IP: 192.168.0.4
Priority: 70
* Compare priorities:
* A = 100
* B = 100
* C = 80
* D = 70
# Highest priority = 100 (A and B tie)
* Tie-breaker # Highest IP address:
* Router A = 192.168.0.100
* Router B = 192.168.0.2
# 192.168.0.100 is higher
Router A becomes the VRRP Master (primary virtual router).
* Router B Same priority as A but lower IP address
* Router C Lower priority (80)
* Router D Lowest priority (70)
VRRP Election Rule:
Highest Priority # Highest IP (tie-breaker)
Default priority = 100, so always check:
* Who changed priority?
* If equal # compare interface IPs