Question: a) What is a use case? Describe what an actor is and what a scenario is in the context of use case. b) What is

a) What is a use case? Describe what an actor is and what a scenario is in the context of use case.

b) What is a use case diagram? What is the purpose of a use case diagram as a tool for software engineering?

c) Draw a use case diagram for a simple Small Library Management System with requirements described below

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