Consider the following Java program. Which line implements an interface method?import java. awt. event.*;import javax. swing.*;public class MouseWhisperer extends JFrame implements MouseListener { MouseWhisperer() { super("COME CLOSER"); setSize(300,100); setDefaultCloseOperation(JFrame. EXIT_ON_CLOSE); addMouseListener(this); setVisible(true); } public void mouseClicked(MouseEvent e) { setTitle("OUCH"); } public void mousePressed(MouseEvent e) { setTitle("LET GO"); } public void mouseReleased(MouseEvent e) { setTitle("WHEW"); } public void mouseEntered(MouseEvent e) { setTitle("I SEE YOU"); } public void mouseExited(MouseEvent e) { setTitle("COME CLOSER"); } public static void main(String[] args) { new MouseWhisperer(); }}Select one:a. addMouseListener(this);b. public class MouseWhisperer extends JFrame implements MouseListener {c. public static void main(String[] args) { new MouseWhisperer(); }d. public void mouseEntered(MouseEvent e) { setTitle("I SEE YOU"); }e. setVisible(true);