import java.awt*；   public class X extends Frame （   public static void main（string args） （  X x = new X （）；   X.pack（）；   x.setVisible（true）；  ）  public X （） （   setlayout （new GridLayout （2，2））；   Panel p1 = new panel（）；    Add（p1）；    Button b1= new Button （“One”）；    P1.add（b1）；   Panel p2 = new panel（）；    Add（p2）；   Button b2= new Button （“Two”）；    P2.add（b2）；    Button b3= new Button （“Three”）；   add（b3）；   Button b4= new Button （“Four”）；   add（b4）；   ）   ）   Which two statements are true？ （）

• A、 All the buttons change height if the frame height is resized.
• B、 All the buttons change width if the Frame width is resized.
• C、 The size of the button labeled “One” is constant even if the Frame is resized.
• D、 Both width and height of the button labeled “Three” might change if the Frame is resized.