How should you configure the relationship?

Your company rents tools and machines to customers.
You create a custom entity named Equipment to track the tools and machines.
You need to show the hierarchical relationships between various pieces of equipment.
How should you configure the relationship?
A. Ensure that you enable Connections for the entity.
B. Set up a parental 1:N relationship between Accounts and Equipment.
C. Create a self-referential relationship and configure hierarchy settings.
D. Set up a N:N relationship between Accounts and Equipment.