thE Author rEgArDs thE nEw mEAns oF wAtEr-usE rEDuCtion unDEr DisCussion As
A．wholly EFFECtivE, But typiCAlly ignorED
B．inExpEnsivE, But insuFFiCiEntly usEFul
C．promising, But DiFFiCult to implEmEnt
D．nECEssAry, But likEly to proDuCE ill siDE-EFFECts
E．(E) univErsAlly ACCEssiBlE, But unnECEssAry