For the code snippet below, the process that prints "Foo" to screen is the pid = fork(); if (pid == 0) printf("Foo "); else if (pid > 0) { printf ("Bar "); } child process parent process init process Choose the statement that is true. A child process always executes the same program as the parent process, until its termination Operating system is interrupt driven. Caching is only ne for main memory Multicore systems have parallelism but no concurrency When a program wants to do something like open a file and read its contents, it usually makes a function call using an API to the operating system. True False