Which of the Following Statements Is True About Expectancy Theory

Which of the following statements is true about expectancy theory?

A) Expectancy theory focuses more on the specific forces that motivate employees and less on the process they follow to seek satisfaction in their jobs.
B) Expectancy theory suggests that employee satisfaction depends on the perceived ratio of inputs to outputs.
C) Research into expectancy theory has led to thinking about the broader concept of organizational justice, or perceptions of fairness in the workplace.
D) Expectancy theory identifies four primary drives that underlie all motivation.
E) Expectancy theory states that the effort employees will put forth depends on their beliefs regarding the rewards that the organization will give in response to that performance.