⟩ In this program #include<stdio.h> #include<signal.h> #include<stdlib.h> int main() { pid_t child; child=fork(); switch(child){ case -1 perror("fork"); exit(1); case 0 while(1){ printf("Child Processn"); sleep(1); } break; default sleep(5); kill(child,SIGINT); printf("The child process has been killed by the parent processn"); break; } return 0; } a) the child process kills the parent process b) the parent process kills the child process c) both the processes are killed by each other d) none of the mentioned