Question 685: Which of the following statments are the correct way to call the methodIssue()defined in the code snippet given below?namespace College { namespace Lib { class Book { public void Issue() { // Implementation code } } class Journal { public void Issue() { // Implementation code } } } }College.Lib.Book b = new College.Lib.Book(); b.Issue();Book b = new Book(); b.Issue();using College.Lib; Book b = new Book(); b.Issue();using College; Lib.Book b = new Lib.Book(); b.Issue();using College.Lib.Book; Book b = new Book(); b.Issue();