When should an administrator consider when using Person Accounts'

In a complex business model and the users find it easiest to record Opportunity information on Contacts rather than Accounts.

In a B2B business model and is selling to the primary contact at a business organization.

In a B2C business model and the consumer is the intended recipient of sates and marketing attention.

In a business model that needs a separate Contact and Account to be included on all Case records submitted.