Water Resource Experts Say the Main Cause of Water Waste

Water resource experts say the main cause of water waste is

A) household and landscaping use, which exceeds all other water expenditures.
B) the artificially low cost of water, which limits the financial incentive to conserve.
C) the "virtual water" system that encourages communities to overuse even during drought conditions.
D) cost systems that differentiate between core living needs and luxury uses.