单项选择题

The producers of instant coffee found their product strongly resisted in the market despite their product’s obvious advantages. Furthermore, the ad money for instant coffee was far greater than that for regular coffee. Efforts were made to find the cause of consumers’ seemingly unreasonable resistance to the product. The reason given by most people was dislike for the taste. The producer suspected that there might be deeper reasons, however. This was confirmed by one of motivation studies, one often cited in the trade. Mason Haire drew up two shopping lists that were the same except for one item: hamburger, carrots, bread, baking powder, canned peaches, and potatoes, with the brands or amounts specified. The seventh item, in fifth place on both lists, read "one pound Maxwell House coffee" on the list and "Nescafe instant coffee" on the other. One list was given to each one in a group of fifty women, and the other list to those in the other group of the same size. The women were asked to study their list and then to describe, as far as they could, the kind of woman who would draw up that shopping list. Nearly half of those who had received the list including instant coffee described a housewife who was lazy. On the other hand, only one woman in the other group described the housewife, who had included regular coffee on her list, as lazy; only six of that group suggested that she was probably not a good wife. No one in the other group drew such a conclusion about the housewife who intended to buy regular coffee.
Which of the following can be inferred from the passage