- Avoidorlimitcaffeine-containingbeveragessuchascoffee,teaandcolas.Colasandrootbeeraresubstitutes,andafallinthepriceofrootbeer(resultinginanincreaseintheconsumptionofrootbeer)willtendtodecreasethedemandforcolas.Coffee,colasandteaaren'tthebestsources,s...
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