Which of the Following Is True of the Expectancy Theory

Which of the following is true of the expectancy theory formulated by Victor H. Vroom?

A) It states that people are motivated to put effort into their work only if they think that their effort will pay off in high performance.
B) It states that once a need has been satisfied, it ceases to be a source of motivation.
C) It states that people are most motivated when they perceive that their own outcome-input ratio is less than that of referents.
D) It drew attention to the important distinction between intrinsic motivation and extrinsic motivation.
E) It suggests that to stimulate high motivation and performance, goals must be specific and difficult.