Question 3. Extending a use case helps to extend an existing use case rather than redefining the use case from the ground up. A customer orders a Birthday cake at an online website and places a request note to write his/her name on the cake. The customer goes to store and picks up the cake. Draw a use case model using extend relationship (Hint: Use Extend relationship between the use cases) a) Identify actors and use cases b) Give all steps from ordering until he/she picks up the cake c) Draw a complete use case diagram using UML notations. Question 4. a) Write a detailed note on the benefits of use case modeling, and how it is important in other phases of SDLC. What are the good qualities of a use case model b)