Look at the following partial class definition, and then respond to the questions that follow it:
public class book
{
private string title;
private string author;
private string publisher;
private int copiessold;
}
a. write a constructor for this class. the constructor should accept an argument for each of the fields.
b. write accessor and mutator methods for each field.
c. draw a umil diagram for the class, including the methods you have wn ding the methods you have written