a. Study the following java code snippet. public class Doctor extends HospitalStaff { private String deptName; // doctor's department name public void read Body Temperature( ) { } System.out.println( "Temperature recorded" ); public void read Blood Pressure( ) { System.out.println( "Blood Pressure recorded" ); } } a. Implement a Constructor that takes a string argument to initialize the department name for every doctor 5 marks b. Identify the base class and the sub class from the code above. Justify your answers c. Suggest by writing down the code for a Doctor object docObj using the default constructor for the Doctor class d. Every doctor belongs to a department. Implement the methods for setting and obtaining the 5 marks department name for every doctor. 5 marks 5 marks