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A newly established family guesthouse wants to have its customer invoices calculated and prepared automatically. As a software developer, you have been asked to develop that software. The software will be based on a client-server architecture where the receptionist will be able to enter the request of the customer which should include the customer ID, customer name, customer phone number, room type, and number of days. The room type, and number of days will then be sent the server for the invoice calculations as it holds the room rate and calculating algorithms. The room rates will be different for the single bed, twin bed and double bed. Customers can get a discount according to the number of days s/he is planning to stay. The discounting scheme is given below. If the number of days is 2 or less, then no discount will be given . If the number of days is more than 2 but less than 5, then a 5% discount will be given . If the number of days is 5 or more, then a 10 % discount will be given Task 4. Utility classes Develop a Menu-Driven program of LinkedHashMap class using the scenario of Task 2 and perform the following operations. (15 marks) a. Create an object of LinkedHashMap class based on the scenario with explanations of the method used. b. Create a method that will allow adding an element to LinkedHashMap Class based on the scenario. The input field must be validated as necessary. C. Create a method to delete all elements in the Linked HashMap with explanations of the method used