The questions:

Consider the following scenario: Oman Autos (OA) is a well-known auto care company in the Sultanate. OA has more than a hundred employees. OA provides one-stop auto care services like scheduled monthly, quarterly and yearly maintenance, service, and repairs. OA has two types of customers, individual and corporate. OA registers the customers and keeps their profile along with the maintenance, repair, and service history of the vehicles. Customers can book an appointment via the website or by calling customer care. At the time of the appointment, the inspection manager inspects the vehicles and prepares an observation report after carrying out different tests on the vehicle. The observation report includes a list of tasks that are strongly recommended and optional. The observation report is sent to the Branch manager who takes approval from the owner of the vehicle, either individual or corporate representative. After getting the necessary approvals from the customers the report including the approved tasks is sent to the auto engineer. The auto engineer sends a request for spare parts to the warehouse and starts working on the job after receiving all the required items. When the job has been completed the accounts department prepares bills based on the details sent by the auto engineer handling the job. The customers are given a gate pass after payment of all the dues which can be used to drive the vehicle out of OA. The vehicle history is updated by the branch manager. 1) Design and explain a complete use case diagram for the above scenario . (30+10=40Marks) 2) Create and explain a sequence diagram showing one of the processes in the system. (15+05=20 Marks) 3) Identify and explain classes with attributes and member functions in the scenario given above to store all the details. (15+05=20 Marks)