Landscape architect: If the screen between these two areas is to be a hedge, that hedge must be of either hemlocks or Leyland cypress trees. However, Leyland cypress trees cannot be grown this far north. So if the screen is to be a hedge, it will be a hemlock hedge.
In which one of the following is the pattern of reasoning most similar to that in the landscape architect’s argument?
A． If there is to be an entrance on the north side of the building, it will have to be approached by a ramp. However, a ramp would become impossibly slippery in winter, so there will be no entrance on the north side.
B． If visitors are to travel to this part of the site by automobile, there will be a need for parking spaces. However, no parking spaces are allowed for in the design. So if visitors are likely to come by automobile, the design will be changed.
C． The subsoil in these five acres either consists entirely of clay or consists entirely of shale. Therefore, if one test hole in the area reveals shale, it will be clear that the entire five acres has a shale subsoil.
D． Any path along this embankment must be either concrete or stone. But a concrete path cannot be built in this location. So if there is to be a path on the embankment, it will be a stone path.
E． A space the size of this meadow would be suitable for a playground or a picnic area. However, a playground would be noisy and a picnic area would create litter. So it will be best for the area to remain a meadow.