Using the following code and user IDs (seed and root), List all possible scenarios where the decision of (fopen()) will be denied and explain why. int main() { char *fn="/tmp/XYZ"; FILE * fp; fp = fopen(fn, "r"); if (fp == NULL) { printf ("fopen() call failed "); printf("Reason: %s ", strerror(errno)); } else printf("fopen() call succeeded "); fclose(fp); return 0;