Councilperson X: We have an obligation to help ensure that electricity rates are the lowest possible. Since the proposed design for a new generating station would clearly allow for the lowest rates, it must be the design we endorse if we agree that we have no choice but to approve construction of a new plant. Councilperson Y: Helping to ensure the lowest electricity rates is not the council' s only job; we also have an obligation not to lower the quality of life of our community. A plant of the type specified by the design would damage our community' s air quality to such an extent that the benefit of lower rates would be outweighed. Which one of the following is an issue about which the two councilpersons disagree? ["It is the council's responsibility to improve the community's quality of life.", 'If a new generating station is to be built, the council should endorse a plant of the type specified by the design in question.', 'A plant of the type specified by the design in question would allow for the lowest electricity rates.', 'The council should recommend the building of a new generating station.']