Criticism: For most people with yards, the savings from converting to a water-conserving landscape cannot justify the expense of new landscaping, since typically the conversion would save less than twenty dollars on a homeowner's yearly water bills.
Which of the following, if true, provides the best basis for a rebuttal of the criticism?
【选项】Even homeowners whose yards do not have water-conserving landscapes can conserve water by installing water-saving devices in their homes.