How is the cluster leader elected if all controllers have the default priority?

A cluster has two Aruba 7240 Mobility Controllers (MCs) and two Aruba 7220 Mobility Controllers (MCs) .

How is the cluster leader elected if all controllers have the default priority?
A . The 7240 controller with the highest MAC address is elected.
B . The controller with the highest IP address is elected.
C . The controller with the highest MAC address is elected.
D . The 7240 controller with the lowest IP address is elected.

Answer: A