下面程序段的输出结果是 class Test{ public static void main(String args[]){ MyThread t=new MyThread()； t．displayOutput( t has been createD) )； t．start()； } } class MyThread extends Thread{ public void displayOutput(String s){ System．out．println(s)； } public void run(){ displayOutput( t is running． )； } }
A．t has been create
B．t has been create t is runnin
C．t is runnin
D．编译出错