With all of our modern labor-saving devices and products, it

With all of our modern labor-saving devices and products, it comes as a great surprise that 100 years ago the average housewife spent 50 percent less time on house-cleaning chores than the average woman of today. This statistic is even more surprising when one learns that there are 250 percent more cleaning devices for sale and 1,000 percent more cleaning products on today’s market than there were 100 years ago, all clamoring to be bought—and used.

The author is possibly suggesting that

A. houses were less clean 100 years ago because there were fewer cleaning products and devices

B. in order to create markets for new products and devices, advertisers may attempt to create more work for users of their products and devices

C. modern advances in chemical, electronic, and mechanical technology have made housework generally more efficient through labor-saving products and devices

D. our improved standard of living over the past 100 years has resulted in less work for the average housewife

E. modern women have more stringent standards of cleanliness than their grandmothers had