Which is NOT true of use cases?

Question $67$ ?options:

They are formal ways of representing how a business system interacts with its environment

They can be thought of as an external or functional view of a business process

They illustrate what starts $($ or triggers $)$ ?an event, all the people that are involved, and how the system provides value

They illustrates the activities that are performed by the users of the system

They sometimes are called 'business scenarios' $($ although 'use case' is generally preferred $)$