P2. ( 20 pts total: 10 pts for the C code, and 10 pts for your answers to the two questions.) Write a C program hw1_p2.c that opens a file (with the open() system call) and then calls fork() to create a new process. 1) Can both the child and parent processes access the file descriptor returned by open()? 2) What happens when they are writing to the file concurrently, i.e., at the same time? Your answers to the two questions should be supported by the outputs of your program, otherwise no credits will be given