In Tehama County, patronage of children's clothing shops

In Tehama County, patronage of children's clothing shops is just high enough for the shop owners to make modest profits. The size of the county's population is stable and is not expected to increase much. Yet there are investors ready to triple the number of children's clothing shops in the county within the next decade, and they are predicting solid profits both for themselves and for the owners of established children's clothing shops.

Which of the following, if true about Tehama County, most helps to provide a justification for the investors' prediction?

A. Over the next twenty years, young parents, the prime consumers of children's clothing, will be a rapidly growing proportion of the county's population.
B. As distinct from the existing children's clothing shops, most of the shops being planned would be located in suburban areas, in hopes of stimulating economic growth in
those areas.
C. Spending on adult clothing has been decreasing slightly each year for the past five years.
D. The average number of square feet per children's clothing shop is lower among existing shops than it is among shops that are still in the planning stages.
E. The sale of accessories for children, such as car seats and toys, accounts for a steadily growing share of most children's clothing shop owners' profits.