Which of the following statements is NOT true of consumers in the context of consumer surplus and willingness to pay?

• A. Consumers always pay exactly their maximum willingness to pay for a good.
• B. A consumer will purchase a good if the market price is less than or equal to their willingness to pay.
• C. Consumer surplus is the difference between what a consumer is willing to pay and what they actually pay.
• D. Consumer surplus increases when the market price decreases, holding willingness to pay constant.

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the concept of willingness to pay (WTP), which is the maximum amount a consumer is ready to pay for a good or service.
2. Step 2: Recognize that consumer surplus is defined as the difference between the consumer's willingness to pay and the actual price paid, mathematically expressed as \(\text{Consumer Surplus} = \text{WTP} - \text{Price}\).
3. Step 3: Analyze the behavior of consumers: they will purchase a good if the market price is less than or equal to their willingness to pay, meaning \(\text{Price} \leq \text{WTP}\).
4. Step 4: Note that consumer surplus increases when the market price decreases, assuming willingness to pay remains constant, because the difference \(\text{WTP} - \text{Price}\) becomes larger.
5. Step 5: Identify the false statement: consumers do not always pay exactly their maximum willingness to pay; instead, they pay the market price, which can be less than their WTP, allowing for consumer surplus.