According to Your Text, Nineteenth Century Economist Alfred Marshall Believed

According to your text, nineteenth century economist Alfred Marshall believed that technical progress is best accomplished by

A) firms of considerable size that have the resources to engage in research and development
B) universities where basic research is initiated
C) curtailing competition so that firms will not lose money by experimenting in research and development
D) the superior inventive force of a multitude of small competitive firms
E) the government subsidizing research and development