Answer:
The correct answer is letter "C": The idea that a higher price means the buying power of income has been reduced.
Explanation:
The Income Effect is the change in consumer consumption triggered by a shift in income, whether income rises or falls. The income effect can be direct or indirect. It is indirect when the consumption of certain goods decreases as the income decreases and indirect when the price of certain goods rise but as the income remains at the same level indirectly the income will be decreased.