现有： 1． class Wrench f 2.public static void main(String [] args) { 3.Wrench w=new Wrench(); Wrench w2=new Wrench(); 4． w2=go (w, w2); 5.System.out.print (w2==w); 6． } 7.static Wrench go (Wrench wrl, Wrench wr2) { 8.Wrench wr3=wrl; wrl=wr2; wr2=wr3; 9． return wr3; 10． } 11． } 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