Which of the following provides an example of the "something you don't know you know" method of authentication? a. rita uses a device similar to a house key in order to access her personal computer. b. chloe touches her index finger to a key pad in order to access the government office where she interns. c. george uses a pass code that was created based on the way he unconsciously reacted in a video game simulation. d. sam uses personal information like his nickname or the city where he was born as passwords for email and websites.