Which of the following statements is true? The program frees the memory space "*buf" holds upon termination The "*buf" is initialized to point to the memory space whose size is 11 bytes "strcpy" function does not check the size of "buf" and copies the 13 bytes from "str" The first printf statement prints "buf contains: Hello world! [size: 13]" The second printf statement prints "str contains: Hello world! [size: 10]