Which of the following, if true, most helps to strengthen the argument above? A. Most residents of San Leonardo who eat in restaurants are not smokers. B. Most smokers who dine in the company of non-smokers are willing to refrain from smoking during their meals. C. If the law banning smoking in restaurants had not been enacted, it is likely that a more stringent law banning smoking in all public places in San Leonardo would have been enacted instead. D. Prior to the enactment of the law banning smoking in San Leonardo's restaurant, the town had a law that required most restaurants to have nonsmoking sections. E. None of the other communities adjacent to San Leonardo, which have restaurants comparable to those of San Leonardo, has enacted and enforces any antismoking legislation.