下面程序段的输出结果是 classTest{ public static void main(Stringargs[]){ MyThread t=new MyThread()； t．displayOutput(”t has been createD) ”)； t．start()； } } Class MyThread extends Thread{ public void displayOutput(Strings){ System．out．println(S)； } public void run(){ displayOutput(”t is running．”)； } }

A．thas been created． t is running.

B．thas been created

C．t is running．

D．编译出错