What indicates a good with a negative income effect?

An inferior good is characterized by a negative income effect, meaning that as consumers' incomes increase, the quantity demanded of that good decreases. This phenomenon occurs because consumers shift their purchasing towards higher-quality substitutes when they have more income.

For example, if more income leads consumers to buy less store-brand pasta and more premium brands, the store-brand pasta is viewed as an inferior good. This behavior reflects a preference for higher-quality alternatives as financial resources expand. Thus, the correct choice highlights a situation where an increase in income leads to a reduction in demand for that particular good, which is a defining feature of inferior goods.