lack of water is an ever-worsening global crisis, with over forty percent of the worldspopulation now suffering from regular and severe water shortage. Increases in population mean that there is less water available per capita. In addition, pollution-related global warming is making some countries, which were already short of water, even hotter and drier(). Demand for water is doubling every twenty year and there are predictions that, in the future, nations may go to war to fight for its control.

Question: Oil shortages, more than a lack of water, are likely to result in war.
Options:
A. true, B. false, C. uncertain
Answer: "C"