PREP2008 一题讨论

When a new restaurant, Martin's Cafe, opened in Riverville last year, many people predicted that business at the Wildflower Inn, Riverville's only other restaurant, would suffer from the competition. Surprisingly, however, in the year since Martin's Cafe opened, the average number of meals per night served at the Wildflower Inn has increased significantly.
Which of the following, if true, most helps to explain the increase?
A. Unlike the Wildflower Inn, Martin's Cafe serves considerably more meals on weekends than it does on weekdays.
B. Most of the customers of Martin's Cafe had never dined in Riverville before this restaurant opened, and on most days Martin's Cafe attracts more customers than it can seat.
C. The profit per meal is higher, on average, for meals served at Martin's Cafe than for those served at the Wildflower Inn.
D. The Wildflower Inn is not open on Sundays, and therefore Riverville residents who choose to dine out on that day must either eat at Martin's Cafe or go to neighboring towns to eat.
E. A significant proportion of the staff at Martin's Cafe are people who formerly worked at the Wildflower Inn and were hired away by the owner of Martin's Cafe.
我的理解：题目说新的餐馆MC在R开张了，有人预测R的另一家餐馆WI会受到竞争，可是令人惊奇的是的，由于MC的开张，WI平均每晚卖出去的食物有所增长。问：下列哪个现象能够解释此增长现象。
答案是B，B说在MC开张之前，大多数人不在R吃正餐，而且MC吸引了更多的人因为有地方坐。
这如何解释了WI的增长？！！！！
请问诸位我理解的对吗？还是本身就没有读懂题？？