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 display Output(String s)
System.out,println(s)；
public void run( )
displayOutput("t is running")；
A．t has been created
t is running
B．t has been created
C．t is running
D．编译错误
