All of the following statements about the impact of small businesses in the U.S. economy are true EXCEPT:
A. small businesses account for half of the U.S. gross domestic product.
B. small businesses provide greater employment stability than large firms in times of economic hardship.
C. small businesses have generated between 60 and 80 percent of the net new jobs in the United States over the past 10 years.
D. small businesses tend to introduce new innovations at a much higher rate than large businesses.