Regarding the election of active ports in link aggregation LACP mode, which of the following is correct?

Regarding the election of active ports in link aggregation LACP mode, which of the following is correct?
A . Compare the priority of the interface first, if it is impossible to determine the better one, continue to compare the interface number, the smaller the better
B . Only compare interface priority
C . Compare device priority
D . Only compare interface numbers

Answer: A