For the following program: 1. Sketch the corresponding process tree --- being sure to indicate outputs and circle synchronization points, if they exist. 2. List all distinct outputs that could be produced when it is executed. main() { int x = 0; printf("1"); 1 (fork() == 0) { printf("2"); } else if (fork() == 0) { printf("3"); } if (x 0); printf(""); } else { printf("5"); } )