The Price Elasticity of Demand for a Certain Agricultural Product

The price elasticity of demand for a certain agricultural product is constant (over the relevant range of prices) and equal to -2. The supply elasticity for this product is constant and equal to 3. Originally the equilibrium price of this good was $45 per unit. Then it was discovered that consumption of this product was unhealthy. The quantity that would be demanded at any price fell by 100%. The percent change in the long-run equilibrium consumption of this good was

A) -100%.
B) -64%.
C) -20%.
D) -60%.
E) There is not enough information to determine the answer.

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