During the late seventies when Japan was rapidly expanding its share of the American auto market, GM surveyed owners of GM cars and asked, "Would you be more willing to buy a large, powerful car or a small, economical car?" Seventy percent of those who responded said that they would prefer a large car. On the basis of this survey, GM decided to continue building large cars. Yet during the '80s, GM lost even more of the market to the Japanese.
Which one of the following, if it were determined to be true, would best explain this discrepancy?
(a) Only 10 percent of those who were polled replied.
(b) Ford which conducted a similar survey with similar results continued to
build large cars and also lost more of their market to the Japanese.
(c) The surveyed owners who preferred big cars also preferred big homes.
(d) GM determined that it would be more profitable to make big cars.
(e) Eighty percent of the owners who wanted big cars and only 40 percent
of the owners who wanted small cars replied to the survey.