请分析下列程序。 int main() { printf("This is in main program"); if(fork()==0) printf("I am in child process"); else printf("I am in parent process");} 程序正确运行后结果是
A、This is in main program I am in child process I am in parent process
B、This is in main program I am in child process
C、This is in main program I am in parent process
D、This is in main program I am in child process This is in main program I am in parent process
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