下面程序# include<stdio.h> # include<string.h>main(){char * p1＝"abc"，* p2＝"ABC"，str[50]＝"xyz"；strcpy(str＋2，strcat(p1，p2))；printf("%s\n"，str)；}输出结果是( )
A.xyzabcABC
B.zabcABC
C.yzabcABC
D.xyabcABC

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