Both are premises, for which no evidence is provided, and both support the argument's only conclusion. The first is the argument's main conclusion; the second is another conclusion supporting the first. The first is a conclusion supporting the second; the second is the argument's main conclusion. The first is the argument's only conclusion; the second is a premise, for which no evidence is provided.
Newsletter: <b> A condominium generally offers more value for its cost than an individual house because of economies of scale. </b> The homeowners in a condominium association can collectively buy products and services that they could not afford on their own. And since a professional management company handles maintenance of common areas, <b> condominium owners spend less time and money on maintenance than individual homeowners do. </b>
The two portions in boldface play which of the following roles in the newsletter's argument?