现有: <br /> class Wrench f <br /> public static void main(String  []  args)  { <br /> Wrench w=new Wrench();    Wrench w2=new Wrench();    <br /> w2=go (w, w2);     <br /> System.out.print (w2==w);     <br /> } <br /> static Wrench go (Wrench wrl,  Wrench wr2)  {    <br /> Wrench wr3=wrl; wrl=wr2; wr2=wr3;    <br /> return wr3;     <br /> }      <br /> 结果是什么?()     
A、 false
B、 true
C、编译失败
D、运行的时候有异常抛出