（）具体表现为机构臃肿、人浮于事、生产效率下降

A.人力资源供求平衡

B.人力资源供大于求

C.人力资源供不应求

D.人力资源供求失真

Which of the following, if true, gives the best explanation for the growing disparity in the earning levels of the two groups in the graph presented above