The demand for used cars has risen dramatically in Germany in recent years. Most of this demand is generated by former East Germans who cannot yet afford new cars and for whom cars were generally unavailable prior to unification. This demand has outstripped supply and thus has exerted an upward pressure on the prices of used cars. Consequently, an increasing number of former West Germans, in order to take advantage of the improved market, will be selling the cars they have owned for several years. Hence, the German new-car market will most likely improve soon as well. Which one of the following, if true, would most help to support the conclusion about the German new-car market? ['Most Germans own very few cars in the course of their lives.', 'The demand for old cars in former West Germany is greater than the demand for new cars in former East Germany.', 'Most former West Germans purchase new cars once they sell their used cars.', 'In most European countries, the sale of a used car is subject to less tax than is the sale of a new car.']