【单选题】The passage suggests which of the following about the majority of United States manufacturing industries before the high-technology development era of the 1980’s?
A.
They lost many of their most innovative personnel to small entrepreneurial enterprises.
B.
They experienced a major decline in profits during the 1960’s and 1970’s.
C.
They could provide real economic benefits to the areas in which they were located.
D.
They employed workers who had no specialized skills.
E.
They actively interfered with local entrepreneurial ventures.