问题：[选择题]

[单项选择题] 下列程序在Frame中设定BorderLayout布局管理器，选择正确的语句填入程序的横线处。 import java.awt.*; public class ex43 extends Frame { public static void main(String[] args) { ex43 obj = new ex43("BorderLayout"); ______ obj.add("North", new Button(&quot

A．obsetLayout(newBorderLayout());
B．setLayout(newBorderkayout());
C．setLayout(BorderLayout());
D．obsetLayout(BorderLayout());