Exercise 7.4 Pg. 219|(Textbook: Engineering Software Products by Ian Sommerville) Suggest, giving reasons, appropriate forms of authentication for the following products: a. An e-learning product for teachers and students, funded by advertising, that allows users to recommend videos and other learning materials on a range of topics. b. A personal finance app for mobile devices that can automatically transfer funds between different accounts based on rules set up by the user. C. A human resources product for businesses that helps manage the process of recruiting new staff