Which of the following most logically completes the passage? According to the last pre-election poll in Whippleton, most voters believe that the three problems government needs to address, in order of importance, air pollution, crime, and unemployment. Yet in the election, candidates from parties perceived as strongly against pollution were defeated, while those elected were all from parties with a history of opposing legislation designed to reduce pollution. These results should not be taken to indicate that the poll was inaccurate, however, since _______ .
【选项】there were no issues other than crime, unemployment, and pollution on which the candidates had significant differences of opinion