System calls and general C library functions have the following differences: System calls are in C, but general functions are not. (B) System calls are entry points into the kernel, but general functions are not. (C) System calls for process management are defined in C, but those for file management are defined in Python. All general functions in C library work with the operating system kernel. Which of the following are correct about threads, processes and programs? A program can become one or more processes (B) Threads can switch more easily than processes can. (C) Threads share data with other threads of the same process (D) All of the rest