对于如下C语言程序 int main() { pid_t pid; int x=1; pid = fork(); if(pid==0) printf("I am the child process, x=%d/n", ++x); else printf("I am the parent process, x=%d/n", --x); } 在UNIX操作系统中正确编译链接后，其正确的运行结果是

A．I am the child process, x=2

B．I am the parent process, x=0

C．I am the parent process, x=2

D．I am the child process, x=0