Which of the following can be said about retailing as an economic activity?
1) Historically, retailing accounted for a large part of the U.S. economy, but recent figures indicate that retailing's impact has waned.
2) Retailing's biggest impact can be seen in the amount of spending on clothing and food service items.
3) Retailing accounts for more than half of the United States' gross domestic product.
4) There are more retailers than ever, but retail spending has steadily been declining over the past 10 years.
5) Retailing's effect on the economy has lessened due to the increase in online shopping.