According to the last paragraph, the fourth way is "of a different kind" because(

Accordingtothelastparagraph,thefourthwayis"ofadifferentkind"because（）

[A]thefirstthreewayscanincreasethewatersupply,whilethefourthonecan't

[B]thefirstthreewayscanmakeabetteruseofwater,whilethefourthonecan't

[C]thefirstthreewaysistechnology-based,whilethefourthoneismarket-based

[D]thefirstthreewayscan'tbalancethesupplyanddemandofwater,whilethefourthonecan