15. When a company is developing a new information system that holds high risks and must work on the very first time, what is the best approach? A) Agile B) Waterfall C) This too hard. Play golf with buddies to discuss liquidating the company 16. Which of the following is a valid access control method? A) something you know, such as a username or password B) Something you have, such as a token, ID card, or badge C) Something you are, such as your unique retinal pattern or fingerprint D) All of the above. E) None of the above