Which of the Following Is a Possible Criticism of the Happy-Is-Productive

Which of the following is a possible criticism of the happy-is-productive model?

A) The roles attributed to managers under this model represented a new brand of elitism.
B) The economic interests of employees were inappropriately emphasized under this model.
C) The model is based on the assumption that firms operate in a market where there is fierce competition among firms.
D) The model proves to be expensive for a firm to execute.