A$/$ Design and implement base class to represent a Worker with the following attributes: ID$,$ name, address, and hired date. Make sure to implement the necessary constructors$/$getters$/$setters and justify which the access modifier of each method $($i$.$e$.$ why it is public, private or protected$).$ The Worker class should have a "Pay" abstract method that will return the amount a worker get per week.

B$/$ Implement a complete HourlyWorker class from the Worker class. The HourlyWorker should have the hourly pay rate and the hours they work per week.

C$/$ Implement a complete SalaryWorker form the Worker who have a fixed annual$/$yearly salary. Note, there are $54$ weeks in a year.

D$/$ Create a SalaryWorker object and an HourlyWorker object, manipulate their attributes, and then explain what the expected output of the objects if we invoke the "pay" method on each of them.