5 The coefficient of price-elasticity of supply for a product is 2.5 if Multiple Choice =Book a 2 percent decrease in the price causes a 1.25 percent decrease in quantity supplied. a 2 percent decrease in price causes a 2.5 percent decrease in quantity supplied. 2 percent decrease in price causes a 5 percent decrease in quantity supplied. a 2.5 percent decrease in price causes a 2.5 percent decrease in quantity supplied