When determining if there is a possible overlap in subnets, what is the first step that should be done to approach the problem systematically?

A) Calculate the subnet ID and subnet broadcast address of each subnet.
B) List the subnet IDs in numerical order.
C) Compare adjacent entries.
D) Determine if there is any overlap in address range.

A
Explanation: A) The first step when presented with this problem is to calculate the subnet ID and subnet broadcast address of each subnet. Only then can the ordering and comparison proceed.