What is the most likely system acquisition method—in-house, turnkey, backbone, or vendor-supported—for each of the following situations?

• A plumbing supply company with 12 employees that sells standard products to wholesale customers in a local community needs a system to manage its affairs.

• A major oil company with diverse holdings, complex oil leases, and esoteric accounting practices needs a system that can coordinate its many enterprises.

• A municipal government needs a system that complies with standard government accounting practices but can be integrated with other existing systems.