During the recent spate of brushfires in the Southwest, homeowners who lived near affected areas were advised to douse their roofs with water to prevent their houses from catching fire before evacuating the area. After the fires were brought under control and the homeowners were allowed to return to the area, many who doused their roofs discovered significant fire damage to their houses. Clearly, then, dousing their roofs was a wasted effort. Which of the following, if true, would most weaken the conclusion above?
【选项】 The houses that suffered the least damage were those in which the owners remained and continuously doused the roofs.