What is the main goal of Smart Water Conservancy in terms of its application in water conservancy projects?（ ）

A、Tosolelyincreasetheefficiencyofwaterresourceutilization.
B、Tosolelyenhancefloodanddroughtdisasterpreventioncapabilities.
C、Toimprovewaterenvironmentsandecosystems,andensurenationalwatersecurityandsustainabledevelopment.
D、Tomerelyapplycutting-edgetechnologieslikeIoTandbigdata.