Which of the following statements are true regarding the Expectancy theory ---?

A. Individuals are satisfied by unsatisfied needs, and that certain lower needs to be satisfied before higher needs can be satisfied. B. Individuals will only put efforts into a certain behavior/ action dependent upon expectancy, valence, and instrumentality. C. Hygiene factors help avoid job dissatisfaction but will not lead to job satisfaction. D. Individuals are motivated by achievement, power and affiliation