Which of the Following Adds a Border to the Following

Multiple Choice

Which of the following adds a border to the following panel? JPanel panel = new JPanel() ;

A) panel.addEtchedBorder() ;
B) panel.addBorder(new EtchedBorder() ) ;
C) panel.add(new EtchedBorder() ) ;
D) panel.setBorder(new EtchedBorder() ) ;