In use cases, an inheritance relationship is A relationship between actors created to simplify the drawing using an abstract actor to show that multiple real actors involved in a use case A relationship between use cases indicating that one use case cannot be performed until another use case has been performed A relationship between an actor and a use case in which an interaction occurs between them A relationship used to show that one use case performs a common set of steps among two or more use case that has been isolated in an abstract use case to reduce redundancy.