下列代码编译或执行结果的描述中，正确的是class Test{public static void main(String args[]){TestThread pm1 = new TestThread("One");pm1.start();TestThread pm2 = new TestThread("Two");pm2.start();}}class TestThread extends Thread{private String sTname="";TestThread(String s){sTname = s;}public void run(){for(int i=0;i<2;i++){try {sleep(1000);} catch (InterruptedException e) {}System.out.println(sTname+" ");}}}

A．不能通过编译，TestThread类中不能定义变量和构造方法

B．输出 One One Two Two

C．输出 Two One One Two

D．选项B或C都有可能出现