The income elasticity of demand for organic vegetables is estimated to be +1.6. If average household incomes fall by 5%, what is the expected percentage change in the quantity demanded of organic vegetables?
−8.0%-8.0\%−8.0%
+8.0%+8.0\%+8.0%
−3.1%-3.1\%−3.1%
+3.1%+3.1\%+3.1%