I think E is the right answer.
According to the conclusion "Therefore, teachers who like to eat their lunches in their classrooms should be offered classrooms in the new wing of the high school" teachers can eat their lunches only in the new wing, that means they can't eat in the classrooms that are carpeted. And the reason for that is to "minimize potential damage to school property, such as that caused by food stains in carpet."
According to the conclusion "Therefore, teachers who like to eat their lunches in their classrooms should be offered classrooms in the new wing of the high school" teachers can eat their lunches only in the new wing, that means they can't eat in the classrooms that are carpeted. And the reason for that is to "minimize potential damage to school property, such as that caused by food stains in carpet."







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