下面程序的结果是 ______。#inCluDE＜iostrEAm.h＞ClAssA{ puBliC: virtuAl voiD Fun()=0{};};ClAssB、puBliCA{ puBliC: voiD Fun () {Cout＜＜ "nEw FilE" ;}};ClAssC、puBliCA{puBliC:voiD Fun (){Cout＜＜"opEn FilE"＜＜ " " }};ClAssD、puBliCA{puBliC:voiD Fun () {Cout＜＜ "sAvE FilE\n" ;}};voiD mAin() {
A、A,*p;
B、B;
C、C;
D、D;p=&C;p-＞Fun ();p=&B;p-＞Fun ();p=&D;p-＞Fun();}
A、nEw FilE opEn FilE sAvE FilE
B、nEw FilE nEw FilE nEw FilE
C、编译出错
D、opEn FilE nEw FilE sAvE FilE