单选题
阅读下列程序
Public class Test implements Runnable{
Private int x=0;
Private int y=o;
boolean flag=true;
Public static void main(string[ ] args) {
Test r =new Test( );
Thead t1=new Thead(r);
Thead t2=new Thead(r);
t1.start( );
t2.start( );
}
Public void run(){
While(flag) {
x++;
y++;
system.out.println(“(” +x_ “,”+y+”)”);
if (x>=10)
flag=false;
}
}
}
下列对程序运行结果描述的选项中，正确的是