Please read Lab Exercise 9.1 - Background on Textbook: p. 363 -> Lab 9.1 first. After reading the background, please work on the following problem: The source process reads information from a file (Therefore, you need to prepare a small text file for testing purpose) The source process calls fork) to create the filter process. a. b. C. n from the source process (passed via an anonymous pipe), converts the uppercase characters to lowercase ones and vice versa, and then prints out the converted characters to the screen. How to create an anonymous pipe: pipe0 API