According to the passage, today’s successful firms,unlike successful firms in the past, may earn the greatest profits by______
A. investing in research to produce cheaper versions of existing technology
B. being the first to market a competing technology
C. adapting rapidly to a technological standard previously set by a competing firm
D. establishing technological leadership in order to shape product definitions in advance of competing firms
E. emphasizing the development of methods for the mass production and distribution of a new technology.