QUESTION 17 A student has written a program and used pid=fork() function call in it. The pid returned by the fork was 5129. Which of the following is true about the process invoking the fork? A. The process is a parent process with pid=5129 B. The process is a child process. Its parent's pid is 5129 C. The process is a parent process. Its child's pid is 5129 D. The process is a child process with pid=5129