对于类TClassA，怎么在Branch中进行链接以准备写入TTree t1内？A、 TClassA *A = new TClassA(); t1.Branch(“A”,*A,32000,2);B、 ​ D) TClassA *A = new TClassA(); t1.Branch(“A”,&*A,32000,2);C、 TClassA *A = new TClassA(); t1.Branch(“A”,A,3200,1);D、 TClassA *A = new TClassA(); t1.Branch(“A”,&A,3200,2);