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[单选] 请分析以下程序。 int main(){ pid_t pid; pid = fork(); if(pid==0)printf("I am the child process, my process ID is%d\n",getpid()); else printf("I am the parent process, my process ID is%d\n",getpid());} 那么,该程序正确运行后的结果是
A.I am the child process, my process ID is 3744 I am the parent process, my process ID is 3987 B.I am the child process, my process ID is 3744 C.I am the parent process, my process ID is 3987 D.不输出任何信息
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