If the market price decreases from \$10 to \$6, how does the consumer surplus change on a graph?

• A. The consumer surplus area increases as the price line moves downward.
• B. The consumer surplus area remains the same as the demand curve does not change.
• C. The consumer surplus area disappears as the market reaches equilibrium.
• D. The consumer surplus area decreases as the price line moves upward.

Answer: (A)