题目选项分析

Traditionally, the most highly sought cars have been the "sports cars" and similar two-door models. Nevertheless, Zincstone Motors has chosen to eliminate the last two-door models and produce only four-door models.

Which of the following would, if true, most help to explain Zincstone Motors' strategy?

【选项】Some of the most financially successful households are the two-income families, a high percentage of which have children.