Incorrect 0/3 pts Question 8 Consider the following C program: #include #include int main() { int pid1; int pid2; int pid3; int pid4; pid1 = getpid(); pid2 = fork(); pid3 = fork(); pid4 = getppid(); if(pidi == pid2) printf("u"); if(pidi == pid3) printf("v"); if(pidl == pid4) printf("w"); if(pid2 == pid3) printf("x"); if(pid2 == pid4) printf("y"); if(pid3 == pid4) printf("z"); sleep(1); // simply pauses execution, does not affect what is printed One possible output of program: How many different outputs are possible? Notice that there are no spaces or newlines printed. HINT: Draw the process graph